{"name":"Toolcroft","url":"https://toolcroft.com","description":"Toolcroft is a free directory of browser-only calculators, converters, generators, and file tools. Inputs never leave the device; there is no account and no upload. CI fails the build if a tool makes an unexpected network request.","tools":[{"slug":"uuid-generator","title":"UUID / GUID Generator","description":"Generate cryptographically random UUIDs: v4, v1, v7, or NIL. Format as standard, no hyphens, uppercase, braces, or URN. 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Classic Latin, hipster, corporate, and bacon variants.","category":"text-tools","url":"https://toolcroft.com/lorem-ipsum-generator/"},{"slug":"percentage-calculator","title":"Percentage Calculator","description":"Calculate percentages four ways: find a percentage of a number, find what percent X is of Y, find the base value, or calculate percent change.","category":"math-calculators","url":"https://toolcroft.com/percentage-calculator/"},{"slug":"age-calculator","title":"Age Calculator","description":"Calculate your exact age in years, months, and days. See total days, weeks, hours, next birthday countdown, zodiac sign, and day of week you were born.","category":"date-time","url":"https://toolcroft.com/age-calculator/"},{"slug":"word-counter","title":"Word & Character Counter","description":"Count words, characters, sentences, and reading time. Updates as you type.","category":"text-tools","url":"https://toolcroft.com/word-counter/"},{"slug":"bmi-calculator","title":"BMI Calculator","description":"Calculate Body Mass Index in metric or imperial. WHO classification and healthy weight range.","category":"health-fitness-calculators","url":"https://toolcroft.com/bmi-calculator/"},{"slug":"tip-calculator","title":"Tip Calculator","description":"Calculate tip, total, and per-person split from a bill amount.","category":"financial-calculators","url":"https://toolcroft.com/tip-calculator/"},{"slug":"password-generator","title":"Password Generator","description":"Generate strong random passwords using the Web Crypto API.","category":"password-security","url":"https://toolcroft.com/password-generator/"},{"slug":"base64-encoder","title":"Base64 Encoder / Decoder","description":"Encode text or files to Base64 online: standard, URL-safe, and Base64url variants. Decode back to text or download as a file. All processing is local.","category":"encoding-tools","url":"https://toolcroft.com/base64-encoder/"},{"slug":"url-encoder","title":"URL Encoder / Decoder","description":"Encode and decode URLs online: encodeURIComponent for query values, encodeURI for full URLs, or percent-decode any encoded string. All processing is local.","category":"encoding-tools","url":"https://toolcroft.com/url-encoder/"},{"slug":"html-entity-encoder","title":"HTML Entity Encoder / Decoder","description":"Encode special characters to HTML entities and decode them back. Supports named (&amp;amp;), decimal (&#38;), and hex (&#x26;) styles. Runs entirely in your browser.","category":"encoding-tools","url":"https://toolcroft.com/html-entity-encoder/"},{"slug":"color-converter","title":"Color Picker & HEX RGB HSL Converter","description":"Pick a color visually or type any format: HEX, RGB, HSL, HSV, or CMYK. See all formats at once with copy buttons. Find the closest CSS named color and Tailwind shade. All processing is local.","category":"color-tools","url":"https://toolcroft.com/color-converter/"},{"slug":"length-converter","title":"Length Unit Converter","description":"Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, nautical miles, and more. Instant bidirectional conversion. All calculations happen locally.","category":"unit-converters","url":"https://toolcroft.com/length-converter/"},{"slug":"weight-converter","title":"Weight Unit Converter","description":"Convert between kilograms, pounds, ounces, stone, metric tons, troy ounces, carats, and more. Instant bidirectional conversion. All calculations happen locally.","category":"unit-converters","url":"https://toolcroft.com/weight-converter/"},{"slug":"temperature-converter","title":"Temperature Converter","description":"Convert between Celsius, Fahrenheit, Kelvin, and Rankine instantly. Includes common reference temperatures and an explanation of each scale. All calculations happen locally.","category":"unit-converters","url":"https://toolcroft.com/temperature-converter/"},{"slug":"loan-calculator","title":"Loan Calculator","description":"Calculate monthly payment, total interest, and total cost for any fixed-rate loan. Enter loan amount, rate, and term. Results update instantly.","category":"financial-calculators","url":"https://toolcroft.com/loan-calculator/"},{"slug":"discount-calculator","title":"Discount Calculator","description":"Calculate discounted price, savings amount, and discount percentage. Enter original price and discount %, or original and final price to find the discount.","category":"financial-calculators","url":"https://toolcroft.com/discount-calculator/"},{"slug":"date-difference-calculator","title":"Days Between Dates","description":"Calculate the exact number of days, weeks, months, and years between two dates. Toggle weekdays-only and include/exclude the end date.","category":"date-time","url":"https://toolcroft.com/date-difference-calculator/"},{"slug":"random-number-generator","title":"Random Number Generator","description":"Generate random integers or decimals within any range. Set count up to 10,000, allow or exclude duplicates, and sort the output. All randomness uses the Web Crypto API.","category":"random-generators","url":"https://toolcroft.com/random-number-generator/"},{"slug":"coin-flipper","title":"Coin Flipper - Flip a Virtual Coin Online","description":"Flip one coin or up to 10 at once. Tracks session stats (heads/tails %) and full history. Optional weighted coin for probability experiments. All randomness uses Web Crypto.","category":"random-generators","url":"https://toolcroft.com/coin-flipper/"},{"slug":"dice-roller","title":"Dice Roller - Roll Any Dice Online (D&D Notation)","description":"Roll d4, d6, d8, d10, d12, d20, d100 or any custom die. Full D&D dice notation: 4d6kh3, 2d20kl1, 3d8! and more. Per-die results, totals, history. All randomness via Web Crypto.","category":"random-generators","url":"https://toolcroft.com/dice-roller/"},{"slug":"json-formatter","title":"JSON Formatter & Validator - Pretty Print, Minify, Validate","description":"Format, validate, and minify JSON instantly in your browser. Pretty-print with 2-space, 4-space, or tab indentation. Sort keys alphabetically. Parse errors shown with line and column.","category":"dev-tools","url":"https://toolcroft.com/json-formatter/"},{"slug":"roman-numeral-converter","title":"Roman Numeral Converter - Arabic ↔ Roman Numerals","description":"Convert between Arabic numbers and Roman numerals instantly. Supports 1 to 3,999,999. Runs entirely in your browser.","category":"math-calculators","url":"https://toolcroft.com/roman-numeral-converter/"},{"slug":"number-base-converter","title":"Number Base Converter - Binary, Octal, Decimal, Hex","description":"Convert numbers between binary (base 2), octal (base 8), decimal (base 10), hexadecimal (base 16), and any base 2–36. Uses BigInt for large numbers.","category":"dev-tools","url":"https://toolcroft.com/number-base-converter/"},{"slug":"sales-tax-calculator","title":"Sales Tax Calculator - Add or Remove Tax Instantly","description":"Calculate sales tax by adding tax to a pre-tax price or removing tax from a total. Includes US state sales tax rate reference. Runs in your browser.","category":"financial-calculators","url":"https://toolcroft.com/sales-tax-calculator/"},{"slug":"mortgage-calculator","title":"Mortgage Calculator - Monthly Payment & Amortization Schedule","description":"Calculate your monthly mortgage payment including principal, interest, property tax, home insurance, PMI, and HOA. View the full amortization schedule. Free, private, runs in your browser.","category":"financial-calculators","url":"https://toolcroft.com/mortgage-calculator/"},{"slug":"compound-interest-calculator","title":"Compound Interest Calculator - Future Value with Contributions","description":"Calculate compound interest and future value of an investment with optional monthly contributions. Choose compounding frequency and see a year-by-year breakdown. Free, private, runs in your browser.","category":"financial-calculators","url":"https://toolcroft.com/compound-interest-calculator/"},{"slug":"timezone-converter","title":"Timezone Converter - Convert Time Between Time Zones","description":"Convert any date and time between multiple time zones instantly. Shows UTC offset, DST status, and day/night indicator. Uses the full IANA timezone database. Runs in your browser.","category":"date-time","url":"https://toolcroft.com/timezone-converter/"},{"slug":"world-clock","title":"World Clock - Live Time in Every Timezone","description":"See the current time in multiple cities and timezones simultaneously. Live-updating clocks with date, UTC offset, and DST indicator. Add your own zones, saved automatically to your browser.","category":"date-time","url":"https://toolcroft.com/world-clock/"},{"slug":"pomodoro-timer","title":"Pomodoro Timer - Free Online Focus Timer","description":"Run focused work and breaks with a customizable Pomodoro timer. Presets, audio cues, optional notifications, and a daily session count, all in your browser.","category":"date-time","url":"https://toolcroft.com/pomodoro-timer/"},{"slug":"countdown-timer","title":"Countdown Timer - Free Online Countdown to Any Date","description":"Count down to any future event: a New Year, vacation, product launch, or deadline. Live days, hours, minutes, and seconds. Save multiple countdowns and share via link. Runs in your browser.","category":"date-time","url":"https://toolcroft.com/countdown-timer/"},{"slug":"stopwatch","title":"Free Online Stopwatch with Lap Timer (Hundredths of a Second)","description":"A free online stopwatch with centisecond timing, lap splits, best and worst lap highlighting, and CSV export. Start, pause, and reset in your browser.","category":"date-time","url":"https://toolcroft.com/stopwatch/"},{"slug":"unix-timestamp-converter","title":"Unix Timestamp Converter - Epoch Time to Date & Back","description":"Convert Unix timestamps (epoch time) to human-readable dates and back. Auto-detects seconds vs milliseconds. Shows ISO 8601, RFC 2822, UTC, and local time. Live current timestamp for developers.","category":"date-time","url":"https://toolcroft.com/unix-timestamp-converter/"},{"slug":"hash-generator","title":"Hash Generator - MD5, SHA-1, SHA-256, SHA-384, SHA-512","description":"Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files, instantly, in your browser. Hex or Base64 output. Nothing uploaded anywhere.","category":"password-security","url":"https://toolcroft.com/hash-generator/"},{"slug":"passphrase-generator","title":"Passphrase Generator (Diceware)","description":"Generate strong Diceware passphrases using the EFF wordlist and Web Crypto randomness. Memorable, high-entropy, and never transmitted anywhere.","category":"password-security","url":"https://toolcroft.com/passphrase-generator/"},{"slug":"password-strength-checker","title":"Password Strength Checker","description":"Check the strength of any password locally: get an entropy estimate, crack time at four attack speeds, pattern warnings, and improvement tips. Nothing sent anywhere.","category":"password-security","url":"https://toolcroft.com/password-strength-checker/"},{"slug":"jwt-decoder","title":"JWT Decoder","description":"Decode any JSON Web Token in your browser: view the header, payload, standard claims, expiry status, and raw base64url parts. Nothing sent to a server.","category":"dev-tools","url":"https://toolcroft.com/jwt-decoder/"},{"slug":"markdown-preview","title":"Markdown to HTML Preview","description":"Live Markdown editor with instant HTML preview, including tables, task lists, code blocks, and GitHub Flavored Markdown. Copy the rendered HTML with one click.","category":"text-tools","url":"https://toolcroft.com/markdown-preview/"},{"slug":"regex-tester","title":"Regex Tester","description":"Live regular expression tester with instant match highlighting, capture groups, replace and split modes, pattern explainer, cheat sheet, and worker-based timeout protection.","category":"dev-tools","url":"https://toolcroft.com/regex-tester/"},{"slug":"text-diff","title":"Text Diff Viewer - Compare Two Texts Side by Side","description":"Compare two texts side by side or in unified format. Highlights added, removed, and modified lines with word- and character-level inline diff. Free, private, runs in your browser.","category":"dev-tools","url":"https://toolcroft.com/text-diff/"},{"slug":"sort-lines","title":"Sort Lines","description":"Sort lines of text alphabetically, numerically, by length, or randomly. Ascending or descending, case-insensitive or case-sensitive. All processing runs in your browser.","category":"text-tools","url":"https://toolcroft.com/sort-lines/"},{"slug":"remove-duplicates","title":"Remove Duplicate Lines","description":"Remove duplicate lines from text instantly. Case-sensitive or case-insensitive, with optional whitespace trimming. See counts of removed duplicates. Runs entirely in your browser.","category":"text-tools","url":"https://toolcroft.com/remove-duplicates/"},{"slug":"slug-generator","title":"Slug Generator","description":"Convert any text to a clean URL slug. Choose hyphen, underscore, or dot separator. Transliterate accented characters, set max length. Free, runs in your browser.","category":"text-tools","url":"https://toolcroft.com/slug-generator/"},{"slug":"qr-code-generator","title":"QR Code Generator","description":"Generate QR codes for URLs, text, Wi-Fi, vCards, email, SMS, phone, geo, crypto, and calendar events. Customize colors, size, and error correction. Download as PNG or SVG.","category":"encoding-tools","url":"https://toolcroft.com/qr-code-generator/"},{"slug":"color-contrast-checker","title":"Color Contrast Checker (WCAG)","description":"Check WCAG 2.x contrast ratio between any two colors. Instant pass/fail for AA and AAA levels across normal text, large text, and UI components.","category":"color-tools","url":"https://toolcroft.com/color-contrast-checker/"},{"slug":"color-palette-generator","title":"Color Palette Generator","description":"Generate harmonic color palettes: complementary, analogous, triadic, tetradic, monochromatic, and split-complementary. Export as CSS variables or JSON.","category":"color-tools","url":"https://toolcroft.com/color-palette-generator/"},{"slug":"css-gradient-generator","title":"CSS Gradient Generator","description":"Build CSS linear, radial, and conic gradients visually. Adjust color stops, angle, and position, then copy the ready-to-use CSS code.","category":"color-tools","url":"https://toolcroft.com/css-gradient-generator/"},{"slug":"volume-converter","title":"Volume Converter","description":"Convert between milliliters, liters, gallons, cups, fluid ounces, and more.","category":"unit-converters","url":"https://toolcroft.com/volume-converter/"},{"slug":"area-converter","title":"Area Converter","description":"Convert between square meters, square feet, acres, hectares, square miles, and more.","category":"unit-converters","url":"https://toolcroft.com/area-converter/"},{"slug":"speed-converter","title":"Speed Converter","description":"Convert between mph, km/h, m/s, knots, and other speed units.","category":"unit-converters","url":"https://toolcroft.com/speed-converter/"},{"slug":"cooking-converter","title":"Cooking Converter","description":"Convert cooking measurements: teaspoons, tablespoons, cups, milliliters, and more.","category":"unit-converters","url":"https://toolcroft.com/cooking-converter/"},{"slug":"data-storage-converter","title":"Data Storage Converter","description":"Convert between bits, bytes, KB, MB, GB, TB, and IEC (KiB, MiB, GiB) units instantly.","category":"unit-converters","url":"https://toolcroft.com/data-storage-converter/"},{"slug":"bmr-calculator","title":"BMR / TDEE Calculator","description":"Calculate your Basal Metabolic Rate and Total Daily Energy Expenditure using Mifflin-St Jeor or Harris-Benedict.","category":"health-fitness-calculators","url":"https://toolcroft.com/bmr-calculator/"},{"slug":"macro-calculator","title":"Macro Calculator","description":"Calculate daily protein, carbs, and fat grams from your calorie target using common macro splits.","category":"health-fitness-calculators","url":"https://toolcroft.com/macro-calculator/"},{"slug":"working-days-calculator","title":"Working Days Calculator","description":"Count the number of business days between two dates, excluding weekends and public holidays for the US, UK, or Canada.","category":"date-time","url":"https://toolcroft.com/working-days-calculator/"},{"slug":"date-add-subtract","title":"Add or Subtract Days from a Date","description":"Add or subtract days, weeks, months, years, hours, or minutes from any date and see the resulting date instantly.","category":"date-time","url":"https://toolcroft.com/date-add-subtract/"},{"slug":"statistics-calculator","title":"Statistics Calculator","description":"Calculate mean, median, mode, standard deviation, variance, quartiles, and IQR from any list of numbers.","category":"math-calculators","url":"https://toolcroft.com/statistics-calculator/"},{"slug":"quadratic-solver","title":"Quadratic Equation Solver","description":"Solve ax² + bx + c = 0. Shows real or complex roots, discriminant, vertex, and step-by-step solution.","category":"math-calculators","url":"https://toolcroft.com/quadratic-solver/"},{"slug":"fraction-calculator","title":"Fraction Calculator","description":"Add, subtract, multiply, and divide fractions or mixed numbers. Shows simplified result, mixed-number form, and decimal equivalent.","category":"math-calculators","url":"https://toolcroft.com/fraction-calculator/"},{"slug":"image-compressor","title":"Image Compressor","description":"Compress JPEG, PNG, and WebP images directly in your browser. Adjust quality, resize, convert formats, and download a ZIP of your batch. Images never leave your device.","category":"image-tools","url":"https://toolcroft.com/image-compressor/"},{"slug":"image-format-converter","title":"Image Format Converter","description":"Convert images between JPEG, PNG, WebP, AVIF, and BMP directly in your browser. Batch convert multiple files and download as a ZIP. Images never leave your device.","category":"image-tools","url":"https://toolcroft.com/image-format-converter/"},{"slug":"image-resizer","title":"Image Resizer","description":"Resize images with pixel or percentage scaling, fit, fill, or stretch modes, format conversion, and quality controls. Files never leave your device.","category":"image-tools","url":"https://toolcroft.com/image-resizer/"},{"slug":"pdf-to-image","title":"PDF to Image Converter","description":"Convert PDF pages to PNG or JPEG images in your browser. Choose DPI, select pages, and download as a ZIP. No uploads, no accounts.","category":"pdf-tools","url":"https://toolcroft.com/pdf-to-image/"},{"slug":"image-to-pdf","title":"Image to PDF Converter","description":"Combine multiple images into a single PDF in your browser. Choose page size, orientation, and margin. Your files never leave your device.","category":"pdf-tools","url":"https://toolcroft.com/image-to-pdf/"},{"slug":"retirement-calculator","title":"Retirement Calculator","description":"Project your retirement nest egg, see how many years your savings will last, and check if you're on track. Enter age, savings, contributions, and return assumptions.","category":"financial-calculators","url":"https://toolcroft.com/retirement-calculator/"},{"slug":"auto-loan-calculator","title":"Auto Loan Calculator","description":"Calculate your monthly car payment, total interest, and true cost of ownership, including down payment, trade-in value, and sales tax.","category":"financial-calculators","url":"https://toolcroft.com/auto-loan-calculator/"},{"slug":"savings-calculator","title":"Savings Goal Calculator","description":"Calculate how long it takes to reach a savings goal, or find out how much you need to save monthly. Enter your target, starting balance, and interest rate.","category":"financial-calculators","url":"https://toolcroft.com/savings-calculator/"},{"slug":"roi-calculator","title":"ROI Calculator","description":"Calculate return on investment (ROI), net gain, and annualized CAGR for any investment. Enter initial amount, final value, and optional holding period.","category":"financial-calculators","url":"https://toolcroft.com/roi-calculator/"},{"slug":"profit-margin-calculator","title":"Profit Margin Calculator","description":"Calculate gross profit margin, markup percentage, and operating margin from cost and revenue. Instant results.","category":"financial-calculators","url":"https://toolcroft.com/profit-margin-calculator/"},{"slug":"salary-to-hourly","title":"Salary to Hourly Calculator","description":"Convert between annual salary, monthly, biweekly, weekly, and hourly pay rates. Adjust hours per week and weeks worked per year.","category":"financial-calculators","url":"https://toolcroft.com/salary-to-hourly/"},{"slug":"gpa-calculator","title":"GPA Calculator","description":"Calculate your cumulative GPA from course grades and credit hours. Supports 4.0, 4.5 (honors), and 5.0 (AP) scales. Saves automatically.","category":"math-calculators","url":"https://toolcroft.com/gpa-calculator/"},{"slug":"final-grade-calculator","title":"Final Grade Calculator","description":"Find out what score you need on your final exam to achieve your desired course grade.","category":"math-calculators","url":"https://toolcroft.com/final-grade-calculator/"},{"slug":"meeting-planner","title":"Multi-Timezone Meeting Planner","description":"Plan meetings across multiple cities and timezones. Visual overlap grid shows working hours for every participant. Download .ics or share a link.","category":"date-time","url":"https://toolcroft.com/meeting-planner/"},{"slug":"cron-expression-builder","title":"Cron Expression Builder / Explainer","description":"Build or decode cron expressions. Type an expression for a plain-English explanation and next 10 run times. Or use the visual builder to create one field by field.","category":"dev-tools","url":"https://toolcroft.com/cron-expression-builder/"},{"slug":"subnet-calculator","title":"IP Subnet Calculator","description":"Calculate IPv4 subnet properties from an IP + CIDR prefix. Get network address, broadcast, first/last host, subnet mask, wildcard mask, and binary breakdown.","category":"dev-tools","url":"https://toolcroft.com/subnet-calculator/"},{"slug":"user-agent-parser","title":"User Agent Parser","description":"Decode any User-Agent string into browser name, version, OS, device type, rendering engine, and CPU architecture, instantly in your browser.","category":"dev-tools","url":"https://toolcroft.com/user-agent-parser/"},{"slug":"markdown-editor","title":"Markdown Editor with Live Preview","description":"Free online Markdown editor with live preview, toolbar shortcuts, multi-document tabs, and localStorage autosave. Export as .md or .html. No login required.","category":"text-tools","url":"https://toolcroft.com/markdown-editor/"},{"slug":"csv-to-json","title":"CSV to JSON Converter","description":"Convert CSV to JSON instantly in your browser. Auto-detect delimiter, type inference, header row toggle, and full RFC 4180 quoting support.","category":"dev-tools","url":"https://toolcroft.com/csv-to-json/"},{"slug":"json-to-csv","title":"JSON to CSV Converter","description":"Convert a JSON array of objects to CSV in your browser. Custom delimiter, quote-all, header toggle, and nested object flattening.","category":"dev-tools","url":"https://toolcroft.com/json-to-csv/"},{"slug":"yaml-formatter","title":"YAML Formatter & Validator","description":"Format and validate YAML online. Detect syntax errors, pretty-print with custom indent, and convert JSON to YAML, all in your browser.","category":"dev-tools","url":"https://toolcroft.com/yaml-formatter/"},{"slug":"xml-formatter","title":"XML Formatter & Validator","description":"Format, beautify, or minify XML online. Validates well-formedness, highlights errors, and supports custom indentation, all in your browser.","category":"dev-tools","url":"https://toolcroft.com/xml-formatter/"},{"slug":"sql-formatter","title":"SQL Formatter & Beautifier","description":"Format and beautify SQL online. Supports PostgreSQL, MySQL, T-SQL, SQLite, MariaDB, and PL/SQL. Choose keyword case and indentation, all in your browser.","category":"dev-tools","url":"https://toolcroft.com/sql-formatter/"},{"slug":"html-formatter","title":"HTML Formatter & Beautifier","description":"Format and beautify HTML online. Adds indentation, fixes nesting, and optionally self-closes void elements, all in your browser. Nothing is uploaded.","category":"dev-tools","url":"https://toolcroft.com/html-formatter/"},{"slug":"css-formatter","title":"CSS Formatter & Minifier","description":"Beautify or minify CSS online. Adds indentation and line breaks, or strips whitespace for production, all in your browser. Nothing is uploaded.","category":"dev-tools","url":"https://toolcroft.com/css-formatter/"},{"slug":"js-formatter","title":"JavaScript Formatter & Minifier","description":"Beautify or minify JavaScript online. Format messy JS with proper indentation, or compress it for production. Runs entirely in your browser.","category":"dev-tools","url":"https://toolcroft.com/js-formatter/"},{"slug":"hmac-generator","title":"HMAC Generator (SHA-256 / SHA-512)","description":"Generate HMAC signatures online using HMAC-SHA-256, HMAC-SHA-512, HMAC-SHA-384, or HMAC-SHA-1. Enter a message and secret key. All computation happens in your browser.","category":"password-security","url":"https://toolcroft.com/hmac-generator/"},{"slug":"totp-generator","title":"TOTP Code Generator (RFC 6238)","description":"Generate TOTP authentication codes from a Base32 secret (RFC 6238 compliant). Shows the current code, next code, and countdown timer. Everything runs in your browser.","category":"password-security","url":"https://toolcroft.com/totp-generator/"},{"slug":"caesar-cipher","title":"Caesar Cipher - Encode, Decode & Brute-Force","description":"Encode or decode text with the Caesar cipher. Set any shift from 1 to 25, or use brute-force mode to try all 25 possible shifts at once. Great for puzzles.","category":"password-security","url":"https://toolcroft.com/caesar-cipher/"},{"slug":"rot13","title":"ROT13 / ROT47 Encoder / Decoder","description":"Encode or decode text with ROT13 or ROT47 in your browser. ROT13 shifts letters; ROT47 also shifts printable ASCII punctuation and digits.","category":"password-security","url":"https://toolcroft.com/rot13/"},{"slug":"vigenere-cipher","title":"Vigenère Cipher - Encode & Decode Online","description":"Encode or decode text with the Vigenère cipher. Enter your text and a keyword; each letter shifts by the corresponding letter of the repeating keyword.","category":"password-security","url":"https://toolcroft.com/vigenere-cipher/"},{"slug":"aes-encrypt-decrypt","title":"AES Encrypt / Decrypt Online (AES-256-GCM)","description":"Encrypt and decrypt text in your browser using AES-256-GCM and PBKDF2. Everything stays on your device.","category":"password-security","url":"https://toolcroft.com/aes-encrypt-decrypt/"},{"slug":"lottery-numbers","title":"Lottery Number Picker - Powerball, Mega Millions & More","description":"Generate random lottery numbers for Powerball, Mega Millions, EuroMillions, or a custom game. All picks use your browser's crypto API.","category":"random-generators","url":"https://toolcroft.com/lottery-numbers/"},{"slug":"decision-wheel","title":"Decision Wheel & Random Picker - Spin to Decide","description":"Enter your options and spin the wheel to get a random pick. Great for making decisions, choosing winners, or settling debates. Runs entirely in your browser.","category":"random-generators","url":"https://toolcroft.com/decision-wheel/"},{"slug":"team-generator","title":"Random Team Generator - Split a List Into Teams Instantly","description":"Split a list into random teams by team count or maximum size. Uses an unbiased Web Crypto shuffle; all processing happens in your browser.","category":"random-generators","url":"https://toolcroft.com/team-generator/"},{"slug":"name-picker","title":"Random Name Picker - Pick Winners & Raffle Names Online","description":"Pick one or more random names from a list. Supports raffle mode (remove after pick), unique picks, or draws with replacement. Runs entirely in your browser.","category":"random-generators","url":"https://toolcroft.com/name-picker/"},{"slug":"triangle-solver","title":"Triangle Solver - Solve Any Triangle (SSS, SAS, ASA, AAS, SSA)","description":"Solve any triangle by entering three known values. Supports SSS, SAS, ASA, AAS, and the ambiguous SSA case. Shows all sides, angles, area, and perimeter.","category":"math-calculators","url":"https://toolcroft.com/triangle-solver/"},{"slug":"right-triangle-calculator","title":"Right Triangle Calculator - Find Missing Sides & Angles","description":"Calculate any unknown side or angle of a right triangle. 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All processing is done locally in your browser.","category":"media-devices","url":"https://toolcroft.com/camera-color-picker/"},{"slug":"camera-heart-rate","title":"Camera Heart Rate Monitor - PPG Pulse Estimate","description":"Estimate your pulse by placing your fingertip over the camera lens. Uses photoplethysmography (PPG) color change analysis. For informational use only - not a medical device.","category":"media-devices","url":"https://toolcroft.com/camera-heart-rate/"},{"slug":"motion-detector","title":"Webcam Motion Detector - Detect Movement Online","description":"Detect motion in real time using your webcam. Visualizes movement regions and triggers an alert. 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No account, no upload, nothing stored on a server.","category":"media-devices","url":"https://toolcroft.com/voice-recorder/"},{"slug":"speech-to-text","title":"Speech to Text Dictation - Voice to Text Online","description":"Dictate with your browser's Web Speech API, then edit, copy, or download your transcript. Chrome and Edge may send audio to their speech services.","category":"media-devices","url":"https://toolcroft.com/speech-to-text/"},{"slug":"speaker-test","title":"Speaker Test - Check Left & Right Audio Channels","description":"Test your speakers or headphones by playing tones through the left, right, or both channels. Check stereo separation and frequency response.","category":"media-devices","url":"https://toolcroft.com/speaker-test/"},{"slug":"hearing-test","title":"Online Hearing Test - Check Your Frequency Hearing Range","description":"Test your hearing range by playing tones from 20 Hz to 20 000 Hz. Find the highest and lowest frequencies you can hear. 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Play vs AI or a friend.","category":"games-puzzles","url":"https://toolcroft.com/connect-four/"},{"slug":"cube-timer","title":"Rubik's Cube Timer","description":"Speedcubing timer with scramble generator, inspection time, and averages of 5 and 12 (Ao5 / Ao12) in WCA style.","category":"games-puzzles","url":"https://toolcroft.com/cube-timer/"},{"slug":"cryptogram-generator","title":"Cryptogram Puzzle Generator","description":"Generate substitution cipher cryptogram puzzles from quotes or your own text. Solve interactively in the browser.","category":"games-puzzles","url":"https://toolcroft.com/cryptogram-generator/"},{"slug":"word-cloud-generator","title":"Word Cloud Generator","description":"Paste text to generate a visual word cloud. 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Enter your birth date and life expectancy to see which weeks have passed and how many remain - inspired by the famous \"Your Life in Weeks\" concept.","category":"date-time","url":"https://toolcroft.com/life-calendar/"},{"slug":"light-meter","title":"Camera Light / EV Meter - Estimate Lux & Exposure from Webcam","description":"Estimate the lighting level in your scene using your webcam. Displays average luminance, approximate EV (exposure value), and a recommended exposure setting. Runs in your browser.","category":"media-devices","url":"https://toolcroft.com/light-meter/"},{"slug":"lights-out","title":"Lights Out - Classic Logic Puzzle Game","description":"Toggle lights on a 5x5 grid to turn them all off. A classic logic puzzle.","category":"games-puzzles","url":"https://toolcroft.com/lights-out/"},{"slug":"linear-regression-calculator","title":"Linear Regression Calculator - Slope, Intercept & R^2","description":"Compute least-squares linear regression for a set of (x, y) data points. Get the slope, intercept, R^2 coefficient of determination, Pearson correlation, and a scatter plot with the best-fit line.","category":"math-calculators","url":"https://toolcroft.com/linear-regression-calculator/"},{"slug":"loan-comparison-calculator","title":"Loan Comparison Calculator - Compare Loans Side by Side","description":"Compare two loan options side by side. See monthly payment, total interest, and total cost for each loan to find the better deal.","category":"financial-calculators","url":"https://toolcroft.com/loan-comparison-calculator/"},{"slug":"magic-square-generator","title":"Magic Square Generator - Odd & Even Order Magic Squares","description":"Generate magic squares where every row, column, and diagonal sums to the same magic constant. Supports odd orders (3, 5, 7, 9, 11) and doubly-even orders (4, 8, 12).","category":"math-calculators","url":"https://toolcroft.com/magic-square-generator/"},{"slug":"media-query-builder","title":"CSS @media Query Builder - Viewport & Breakpoint Tester","description":"Build CSS @media queries visually. Set min/max width, height, orientation, prefers-color-scheme, and more. Preview the result and test against your current viewport.","category":"dev-tools","url":"https://toolcroft.com/media-query-builder/"},{"slug":"meeting-cost-calculator","title":"Meeting Cost Calculator - Live Running Cost Clock","description":"Track the real-time cost of your meetings. Enter attendee count and average salary, then start the clock to see how much the meeting costs per second, minute, and in total.","category":"misc-calculators","url":"https://toolcroft.com/meeting-cost-calculator/"},{"slug":"mental-math-quiz","title":"Mental Math Speed Quiz - Arithmetic Under Time Pressure","description":"Sharpen your mental arithmetic with timed addition, subtraction, multiplication, and division questions. Choose difficulty and track your accuracy and speed.","category":"games-puzzles","url":"https://toolcroft.com/mental-math-quiz/"},{"slug":"mesh-gradient-generator","title":"Mesh Gradient Generator - CSS Gradient Builder","description":"Create beautiful mesh, conic, radial, and linear CSS gradients in your browser. Pick colors, adjust positions, and copy the generated CSS.","category":"color-tools","url":"https://toolcroft.com/mesh-gradient-generator/"},{"slug":"mind-map","title":"Mind Map / Thought Web Organizer","description":"Create and organize mind maps in your browser. Add nodes, drag to rearrange, double-click to edit text, and save your map automatically with localStorage.","category":"misc-calculators","url":"https://toolcroft.com/mind-map/"},{"slug":"mnemonic-generator","title":"Mnemonic (First-Letter) Generator - Acronym Memory Aid","description":"Create mnemonic phrases from acronyms (e.g. ROYGBIV -> \"River Oak Yellow\") or extract an acronym from any sentence. Perfect for memorising lists, sequences, and study material.","category":"text-tools","url":"https://toolcroft.com/mnemonic-generator/"},{"slug":"n-back-game","title":"N-Back Working Memory Game - Dual N-Back Cognitive Trainer","description":"Train your working memory with the dual n-back task. Monitor a sequence of positions and letters and respond when a stimulus matches one from n steps back.","category":"games-puzzles","url":"https://toolcroft.com/n-back-game/"},{"slug":"ne555-calculator","title":"NE555 Timer Calculator - Astable & Monostable Modes","description":"Calculate NE555 timer frequency, period, duty cycle, and pulse width for both astable (oscillator) and monostable (one-shot) configurations. Enter R1, R2, and capacitor values.","category":"science-engineering","url":"https://toolcroft.com/ne555-calculator/"},{"slug":"noise-texture-generator","title":"Noise Texture Generator - Perlin / Value Noise PNG","description":"Generate procedural noise textures in your browser. Adjust scale, octaves, persistence, seed, and color scheme. Download as a PNG image.","category":"image-tools","url":"https://toolcroft.com/noise-texture-generator/"},{"slug":"nonogram-puzzle","title":"Nonogram Puzzle - Free Picross Logic Game","description":"Solve nonogram (picross) puzzles by filling in cells using row and column clues.","category":"games-puzzles","url":"https://toolcroft.com/nonogram-puzzle/"},{"slug":"number-memory-game","title":"Number Memory Game - Digit Span Working Memory Test","description":"Test and train your digit span - the number of digits you can hold in working memory. Numbers are shown briefly; type them back as accurately as possible.","category":"games-puzzles","url":"https://toolcroft.com/number-memory-game/"},{"slug":"number-theory-explorer","title":"Number Theory Explorer - Perfect, Abundant & Amicable Numbers","description":"Explore number theory concepts: perfect numbers, abundant numbers, amicable pairs, prime factorization, and divisors - all calculated instantly in your browser.","category":"math-calculators","url":"https://toolcroft.com/number-theory-explorer/"},{"slug":"oauth-pkce-generator","title":"OAuth 2.0 PKCE Generator - Code Verifier & Challenge for S256","description":"Generate OAuth 2.0 PKCE code_verifier and code_challenge (S256) pairs for public clients. Build the complete authorization URL with client ID, redirect URI, scope, and state.","category":"dev-tools","url":"https://toolcroft.com/oauth-pkce-generator/"},{"slug":"og-image-generator","title":"Open Graph / Social Card Image Generator","description":"Generate a 1200x630 Open Graph social card image with custom title, subtitle, background and text colours. Preview live and download as a PNG to use with og:image meta tags.","category":"image-tools","url":"https://toolcroft.com/og-image-generator/"},{"slug":"op-amp-calculator","title":"Op-Amp Calculator - Inverting, Non-Inverting & Difference Gain","description":"Calculate op-amp gain for inverting, non-inverting, and difference amplifier configurations. Enter Rf and Rin to get the gain, or supply input voltage to compute the output.","category":"science-engineering","url":"https://toolcroft.com/op-amp-calculator/"},{"slug":"packing-list-generator","title":"Packing List Generator","description":"Generate a customized packing list for any trip type - beach, hiking, business travel, camping, city break, or ski trip. Check off items as you pack and save your list.","category":"misc-calculators","url":"https://toolcroft.com/packing-list-generator/"},{"slug":"palindrome-checker","title":"Palindrome Checker & Generator - Test & Create Palindromes","description":"Check if any word, phrase, or sentence is a palindrome (reads the same forwards and backwards). Ignores spaces and punctuation. Also finds the longest palindromic substring and generates palindromes from a prefix.","category":"text-tools","url":"https://toolcroft.com/palindrome-checker/"},{"slug":"particle-playground","title":"Particle Playground - Canvas Animation Tool","description":"An interactive particle animation playground running in your browser. Adjust count, speed, size, color modes, and trail settings in real time.","category":"image-tools","url":"https://toolcroft.com/particle-playground/"},{"slug":"pascals-triangle","title":"Pascal's Triangle Generator - Rows, Binomial Coefficients","description":"Generate Pascal's Triangle up to 25 rows. Highlights diagonals (natural numbers, triangular numbers, Fibonacci), shows binomial coefficients, and lets you download the table.","category":"math-calculators","url":"https://toolcroft.com/pascals-triangle/"},{"slug":"pe-ratio-calculator","title":"P/E Ratio & Graham Number Intrinsic Value Calculator","description":"Calculate the P/E ratio, P/B ratio, earnings yield, Graham Number intrinsic value, PEG ratio, and margin of safety for any stock. Based on Benjamin Graham's value investing formulas.","category":"financial-calculators","url":"https://toolcroft.com/pe-ratio-calculator/"},{"slug":"pendulum-calculator","title":"Pendulum Calculator - Period, Frequency & Length","description":"Calculate the period (T = 2pisqrt(L/g)), frequency, and length of a simple pendulum. Enter any two values to solve for the third. Supports custom gravitational acceleration.","category":"science-engineering","url":"https://toolcroft.com/pendulum-calculator/"},{"slug":"pet-food-calculator","title":"Pet Food Calculator: Daily Portions for Dogs & Cats","description":"Calculate how much to feed your dog or cat each day based on weight, activity level, and life stage. Uses the standard veterinary RER/MER energy formula.","category":"health-fitness-calculators","url":"https://toolcroft.com/pet-food-calculator/"},{"slug":"ph-calculator","title":"pH Calculator - Acidity, [H], and pOH Converter","description":"Convert between pH, hydrogen ion concentration [H], and pOH. Determine whether a solution is acidic, neutral, or basic.","category":"science-engineering","url":"https://toolcroft.com/ph-calculator/"},{"slug":"phone-formatter","title":"International Phone Number Formatter - E.164 & Local Formats","description":"Format phone numbers in E.164, national, and international formats. Supports 20+ countries including US, UK, Germany, Japan, India, and more.","category":"text-tools","url":"https://toolcroft.com/phone-formatter/"},{"slug":"phonetic-matcher","title":"Soundex & Metaphone Phonetic Name Matcher","description":"Check if two names sound the same using the Soundex and Metaphone phonetic algorithms. Useful for name deduplication, genealogy research, and fuzzy name matching.","category":"text-tools","url":"https://toolcroft.com/phonetic-matcher/"},{"slug":"photo-filters","title":"Photo Filters & Effects Studio - Vintage, Sketch, Cartoon & More","description":"Apply vintage, sepia, grayscale, sketch, cartoon, and other photo filters to any image in your browser. No upload required - all processing is done locally.","category":"media-devices","url":"https://toolcroft.com/photo-filters/"},{"slug":"photomosaic-generator","title":"Photomosaic Generator - Pixel Art Mosaic Effect","description":"Upload a photo and transform it into a color-block mosaic with square or circular tiles. Adjust grid size and gap, then download the result as a PNG.","category":"image-tools","url":"https://toolcroft.com/photomosaic-generator/"},{"slug":"pixel-sorter","title":"Pixel Sorter / Glitch Art Generator - Pixel Sorting Online","description":"Create glitch art by sorting pixels in your image by brightness, hue, or color channel. Adjust threshold and direction for different visual effects. Runs entirely in your browser.","category":"media-devices","url":"https://toolcroft.com/pixel-sorter/"},{"slug":"poker-odds-calculator","title":"Poker Odds Calculator - 5-Card Hand Probabilities","description":"Look up the exact probability of every 5-card poker hand (Royal Flush through High Card) from a standard 52-card deck. Also classify any 5-card hand you enter.","category":"math-calculators","url":"https://toolcroft.com/poker-odds-calculator/"},{"slug":"pong-game","title":"Pong Game - Free Online Classic Arcade Game","description":"Classic two-player Pong - play against the AI in the original arcade game.","category":"games-puzzles","url":"https://toolcroft.com/pong-game/"},{"slug":"posterize-tool","title":"Posterize / Color-Reduce Image Tool - Online Posterizer","description":"Reduce the number of colors in an image to create a bold posterized look. Choose between 2 and 8 color levels per channel, preview the result instantly, and download as PNG.","category":"image-tools","url":"https://toolcroft.com/posterize-tool/"},{"slug":"posture-reminder","title":"Posture Reminder - Webcam Slouch Alert","description":"Use your webcam to monitor your posture and get reminders when you slouch. The tool takes a baseline photo of your upright posture and alerts you when frame differences indicate significant movement.","category":"media-devices","url":"https://toolcroft.com/posture-reminder/"},{"slug":"pregnancy-weight-gain-calculator","title":"Pregnancy Weight Gain Calculator (IOM Guidelines)","description":"Calculate recommended pregnancy weight gain based on pre-pregnancy BMI using IOM (Institute of Medicine) 2009 guidelines. Track whether you are on track each trimester.","category":"health-fitness-calculators","url":"https://toolcroft.com/pregnancy-weight-gain-calculator/"},{"slug":"pupillary-distance-measurer","title":"Pupillary Distance (PD) Measurer - Camera Estimate","description":"Estimate your pupillary distance (PD) using your webcam and a credit card as a scale reference. Click on your pupils and card edges to measure. For informational use - not a prescription tool.","category":"media-devices","url":"https://toolcroft.com/pupillary-distance-measurer/"},{"slug":"qr-code-customizer","title":"QR Code Customizer - Custom Color QR Generator","description":"Customize QR codes with color, size, error correction, and a local center logo. Preview live and download PNG or logo-free SVG.","category":"image-tools","url":"https://toolcroft.com/qr-code-customizer/"},{"slug":"ranked-choice-calculator","title":"Ranked-Choice / Instant-Runoff Vote Calculator","description":"Run an instant-runoff (ranked-choice) election. Add candidates, enter ranked ballots, and see which candidate wins through progressive elimination rounds.","category":"misc-calculators","url":"https://toolcroft.com/ranked-choice-calculator/"},{"slug":"reaction-time-test","title":"Reaction Time Test - Measure Your Reflexes Online","description":"Measure your reaction time with a 5-trial click test. Click as fast as possible when the screen turns green. See your average and percentile ranking.","category":"games-puzzles","url":"https://toolcroft.com/reaction-time-test/"},{"slug":"reading-time-estimator","title":"Reading Time Estimator - How Long to Read Your Article","description":"Estimate how long it takes to read any text. Shows reading time for slow, average, fast, and speed readers based on word count. Also counts words, characters, and sentences.","category":"text-tools","url":"https://toolcroft.com/reading-time-estimator/"},{"slug":"rent-affordability-calculator","title":"Rent Affordability Calculator - 30% Rule & 50/30/20 Budget","description":"Find your maximum affordable rent using the 30% rule and 50/30/20 budget framework. Enter your gross annual income to see how much rent you can afford.","category":"financial-calculators","url":"https://toolcroft.com/rent-affordability-calculator/"},{"slug":"reynolds-number-calculator","title":"Reynolds Number Calculator - Laminar vs Turbulent Flow","description":"Calculate the Reynolds number (Re = vL/) for any fluid and pipe geometry. Instantly determine whether flow is laminar, transitional, or turbulent.","category":"science-engineering","url":"https://toolcroft.com/reynolds-number-calculator/"},{"slug":"running-cadence-calculator","title":"Running Cadence & Stride Length Calculator","description":"Calculate your running stride length from cadence (steps per minute) and pace, or find the cadence needed for a target stride length. Improve running efficiency.","category":"health-fitness-calculators","url":"https://toolcroft.com/running-cadence-calculator/"},{"slug":"salary-comparison","title":"Salary Comparison by City - Cost of Living Adjusted","description":"Compare job offers and salaries across cities after adjusting for cost of living. Uses a cost of living index to show which salary has the most real buying power.","category":"financial-calculators","url":"https://toolcroft.com/salary-comparison/"},{"slug":"scale-visualizer","title":"Music Scale Visualizer & Reference - Guitar Fretboard & Piano","description":"Visualize any music scale on a guitar fretboard and piano keyboard. Supports major, minor, pentatonic, blues, modes and more for all 12 roots.","category":"media-devices","url":"https://toolcroft.com/scale-visualizer/"},{"slug":"screen-eyedropper","title":"Screen Color Eyedropper - Pick Any Color from Your Screen","description":"Pick any color from anywhere on your screen using the browser EyeDropper API. Get instant HEX, RGB, and HSL values. No extensions required.","category":"media-devices","url":"https://toolcroft.com/screen-eyedropper/"},{"slug":"scroll-playground","title":"CSS Scroll Snap Playground - Interactive Demo","description":"Experiment with CSS scroll-snap-type, scroll-snap-align, and scroll-behavior in an interactive playground. Copy the generated CSS for your project.","category":"color-tools","url":"https://toolcroft.com/scroll-playground/"},{"slug":"scrollbar-generator","title":"CSS Scrollbar Styler - Custom Scrollbar Generator","description":"Design a custom CSS scrollbar with live preview. Control width, track color, thumb color, hover color, and border-radius. Generates webkit and Firefox CSS ready to copy.","category":"color-tools","url":"https://toolcroft.com/scrollbar-generator/"},{"slug":"signature-pad","title":"Signature Pad - Draw & Download Signature","description":"Draw your signature with a mouse or touchscreen. Download as a transparent PNG or SVG. Adjust stroke color and width.","category":"image-tools","url":"https://toolcroft.com/signature-pad/"},{"slug":"simon-says","title":"Simon Says - Color Sequence Memory Game","description":"Play the classic Simon Says color memory game in your browser. Watch the growing color sequence and repeat it back. How far can you go?","category":"games-puzzles","url":"https://toolcroft.com/simon-says/"},{"slug":"sleep-tracker","title":"Sleep Quality Journal & Pattern Logger","description":"Log your bedtime, wake time, and sleep quality each day. Track average sleep duration and quality trends over time. All data is stored locally in your browser.","category":"health-fitness-calculators","url":"https://toolcroft.com/sleep-tracker/"},{"slug":"snake-game","title":"Snake Game - Free Classic Online Snake","description":"Classic snake game - eat apples, grow longer, avoid walls and yourself.","category":"games-puzzles","url":"https://toolcroft.com/snake-game/"},{"slug":"snells-law-calculator","title":"Snell's Law Calculator - Refraction Angle & Total Internal Reflection","description":"Solve Snell's Law nsin(theta) = nsin(theta) for the refracted angle or refractive index. Automatically detects total internal reflection and shows the critical angle.","category":"science-engineering","url":"https://toolcroft.com/snells-law-calculator/"},{"slug":"solitaire-game","title":"Solitaire Game - Free Online Klondike Solitaire","description":"Play classic Klondike Solitaire card game in your browser.","category":"games-puzzles","url":"https://toolcroft.com/solitaire-game/"},{"slug":"specific-heat-calculator","title":"Specific Heat Calculator - Q = mcT Solver","description":"Solve the specific heat equation Q = m x c x T for any of the four variables: heat energy (Q), mass (m), specific heat capacity (c), or temperature change (T). Includes a table of common materials.","category":"science-engineering","url":"https://toolcroft.com/specific-heat-calculator/"},{"slug":"speed-reading-trainer","title":"Speed Reading Trainer - RSVP Flash Card Reader","description":"Train yourself to read faster with Rapid Serial Visual Presentation (RSVP). Paste any text or pick a sample passage, set your WPM speed, and the trainer flashes one word at a time at your chosen pace.","category":"text-tools","url":"https://toolcroft.com/speed-reading-trainer/"},{"slug":"spf-calculator","title":"SPF Sunscreen Calculator - Burn Time & Protection Duration","description":"Calculate how long sunscreen protects your skin based on your Fitzpatrick skin type, SPF rating, and UV index. See how much sunscreen to apply and when to reapply.","category":"health-fitness-calculators","url":"https://toolcroft.com/spf-calculator/"},{"slug":"spirograph","title":"Spirograph & Lissajous Curve Generator - Geometric Art Visualizer","description":"Generate beautiful spirograph (hypotrochoid) and Lissajous curves in your browser. Adjust inner/outer circle radii, pen distance, and frequency ratios to create endless geometric patterns.","category":"math-calculators","url":"https://toolcroft.com/spirograph/"},{"slug":"stargazing-planner","title":"Stargazing Planner - Planet Visibility Calculator","description":"Check when Mercury, Venus, Mars, Jupiter, and Saturn are visible in the sky. Uses simplified orbital mechanics to predict planet elongation and visibility.","category":"date-time","url":"https://toolcroft.com/stargazing-planner/"},{"slug":"steganography-tool","title":"Image Steganography - Hide Text in an Image","description":"Hide a secret text message inside any PNG image using LSB steganography, or reveal hidden messages from an image. All processing runs locally in your browser.","category":"media-devices","url":"https://toolcroft.com/steganography-tool/"},{"slug":"stop-motion-studio","title":"Stop-Motion Animation Studio - Webcam Frame Capture","description":"Create stop-motion animations using your webcam. Capture frames one by one, preview the playback, and manage your frame sequence. Runs entirely in your browser.","category":"media-devices","url":"https://toolcroft.com/stop-motion-studio/"},{"slug":"string-byte-counter","title":"String Byte-Size Counter - UTF-8, UTF-16, and UTF-32 Lengths","description":"Count how many bytes a string occupies in UTF-8, UTF-16 LE/BE, and UTF-32 encodings. See which characters are multi-byte and their individual byte sizes.","category":"dev-tools","url":"https://toolcroft.com/string-byte-counter/"},{"slug":"stroop-test","title":"Stroop Effect Test - Cognitive Interference Experiment","description":"Experience the Stroop effect - identify the ink color of a color word as fast as possible. Measures cognitive interference when the word and color conflict.","category":"games-puzzles","url":"https://toolcroft.com/stroop-test/"},{"slug":"subscription-analyzer","title":"Subscription Cost Analyzer - Monthly & Annual True Cost","description":"Track all your subscriptions and see the true monthly and annual total. Add Netflix, Spotify, gym, cloud storage and more. Shows cost per day, per category, and total annual spend.","category":"financial-calculators","url":"https://toolcroft.com/subscription-analyzer/"},{"slug":"svg-path-editor","title":"SVG Path Editor / Previewer - Live Path Visualizer","description":"Paste an SVG path `d` attribute and instantly see a live SVG preview. Translate and scale the path, inspect parsed commands, and copy the modified path.","category":"image-tools","url":"https://toolcroft.com/svg-path-editor/"},{"slug":"svg-sprite-generator","title":"SVG Sprite Generator - Combine SVG Icons","description":"Upload multiple SVG files and combine them into a single SVG sprite sheet with <symbol> elements. Download the sprite sheet and get <use> snippets for each icon.","category":"image-tools","url":"https://toolcroft.com/svg-sprite-generator/"},{"slug":"sweat-rate-calculator","title":"Sweat Rate & Hydration Calculator for Athletes","description":"Calculate your personal sweat rate and post-exercise rehydration target. Weigh yourself before and after a workout to get a precise fluid replacement plan.","category":"health-fitness-calculators","url":"https://toolcroft.com/sweat-rate-calculator/"},{"slug":"swift-code-validator","title":"SWIFT / BIC Code Validator - Bank Identifier Code Checker","description":"Validate and decode SWIFT/BIC codes. See the breakdown of bank code, country, location code, and branch. Includes country name lookup for 60+ countries.","category":"text-tools","url":"https://toolcroft.com/swift-code-validator/"},{"slug":"tenure-calculator","title":"Work Anniversary & Tenure Calculator","description":"Calculate how long you have worked at a job - in years, months, and days - and find out when your next work anniversary is.","category":"date-time","url":"https://toolcroft.com/tenure-calculator/"},{"slug":"text-shadow-generator","title":"CSS Text Shadow Generator - Multi-Layer Shadow Builder","description":"Create CSS text-shadow effects with multiple layers. Adjust offset, blur, and color for each layer. Choose from presets like neon glow, emboss, and outline, then copy the generated CSS.","category":"dev-tools","url":"https://toolcroft.com/text-shadow-generator/"},{"slug":"text-summarizer","title":"Extractive Text Summarizer - TF-IDF Key Sentence Extractor","description":"Automatically summarize long text by extracting the most important sentences using TF-IDF scoring. Adjust the number of sentences to keep and copy the summary.","category":"text-tools","url":"https://toolcroft.com/text-summarizer/"},{"slug":"tide-calculator","title":"Tidal Prediction Calculator - Tidal Harmonic Model","description":"Predict tidal heights using a simplified harmonic model based on the major lunar and solar tidal constituents. View a 48-hour tide curve and find high/low tide times.","category":"date-time","url":"https://toolcroft.com/tide-calculator/"},{"slug":"tier-list-maker","title":"Tier List Maker","description":"Create a tier list by dragging items into S, A, B, C, D, and F tiers. Add your own items, rearrange them, and share the results. Saved to localStorage.","category":"misc-calculators","url":"https://toolcroft.com/tier-list-maker/"},{"slug":"tilt-shift-effect","title":"Tilt-Shift / Miniature Effect Generator - Make Photos Look Like Models","description":"Create a tilt-shift miniature effect from any photo. Keep a horizontal band in focus and blur the rest to make real scenes look like tiny scale models. Runs locally in your browser.","category":"media-devices","url":"https://toolcroft.com/tilt-shift-effect/"},{"slug":"time-lapse-recorder","title":"Time-Lapse Webcam Recorder - Interval Capture in Browser","description":"Record time-lapse footage directly in your browser using your webcam. Set the capture interval, watch the frame count grow, and download the captured frames.","category":"media-devices","url":"https://toolcroft.com/time-lapse-recorder/"},{"slug":"tinnitus-masker","title":"Tinnitus Notch / Masker Tone Tool - Sound Therapy Aid","description":"Generate notched noise with an uncalibrated frequency matcher for informational or relaxation use. Not a hearing test or tinnitus treatment.","category":"media-devices","url":"https://toolcroft.com/tinnitus-masker/"},{"slug":"toggle-switch-generator","title":"CSS Toggle Switch Generator - Custom On/Off Switch","description":"Design a custom CSS toggle switch with live preview. Set track colors, thumb size, animation speed, and labels. Generates ready-to-use HTML and CSS with no JavaScript required.","category":"color-tools","url":"https://toolcroft.com/toggle-switch-generator/"},{"slug":"tower-of-hanoi","title":"Tower of Hanoi - Step-by-Step Puzzle Solver & Visualizer","description":"Watch the Tower of Hanoi puzzle solve itself step by step with animated discs. Choose up to 8 discs, auto-play or step manually, and learn the recursive algorithm.","category":"math-calculators","url":"https://toolcroft.com/tower-of-hanoi/"},{"slug":"ulid-generator","title":"ULID Generator - Sortable Unique ID Generator","description":"Generate ULIDs (Universally Unique Lexicographically Sortable Identifiers) in the browser. ULIDs combine a millisecond-precision timestamp with cryptographic randomness into a 26-character Crockford Base32 string.","category":"dev-tools","url":"https://toolcroft.com/ulid-generator/"},{"slug":"uv-calculator","title":"UV Index Calculator - Burn Time, Vitamin D & SPF Guide","description":"Enter the UV index and your Fitzpatrick skin type to calculate safe sun exposure time, vitamin D production time, and the recommended SPF sunscreen rating.","category":"health-fitness-calculators","url":"https://toolcroft.com/uv-calculator/"},{"slug":"venn-diagram","title":"Venn Diagram Generator - Set Operations Visualizer (2 or 3 Sets)","description":"Create interactive Venn diagrams for 2 or 3 sets. Enter items, see union, intersection, difference, and symmetric difference calculated instantly with a visual SVG diagram.","category":"math-calculators","url":"https://toolcroft.com/venn-diagram/"},{"slug":"virtual-background","title":"Portrait Blur - Webcam Background Blur","description":"Blur your webcam background in real time without any app installation. Adjust blur strength and portrait area. All processing happens locally in your browser.","category":"media-devices","url":"https://toolcroft.com/virtual-background/"},{"slug":"virtual-piano","title":"Virtual Piano Keyboard - Play Piano in the Browser","description":"Play a virtual piano keyboard directly in your browser using your mouse or QWERTY keyboard. No plugins or downloads required. Great for learning notes.","category":"media-devices","url":"https://toolcroft.com/virtual-piano/"},{"slug":"vocal-range-finder","title":"Vocal Range Finder - Sing Your Note Range with Mic Pitch Detection","description":"Discover your singing vocal range using your microphone. Sing your lowest and highest notes - the tool detects the pitch and displays your note range and voice classification.","category":"media-devices","url":"https://toolcroft.com/vocal-range-finder/"},{"slug":"voice-changer","title":"Voice Changer - Pitch Shift Your Voice in the Browser","description":"Record your voice and play it back at a different pitch - chipmunk, deep monster, or anything in between. No upload needed, runs entirely in your browser.","category":"media-devices","url":"https://toolcroft.com/voice-changer/"},{"slug":"waist-height-ratio","title":"Waist-to-Height Ratio Calculator - Cardiovascular Risk","description":"Calculate your waist-to-height ratio (WHtR) to assess cardiovascular and metabolic health risk. Research shows WHtR may be a better predictor of health risk than BMI alone.","category":"health-fitness-calculators","url":"https://toolcroft.com/waist-height-ratio/"},{"slug":"week-number-calculator","title":"ISO Week Number Calculator","description":"Find the ISO 8601 week number for any date. See the week year, day of the week, and the exact Monday-Sunday date range for the selected week.","category":"date-time","url":"https://toolcroft.com/week-number-calculator/"},{"slug":"whack-a-mole","title":"Whack-a-Mole - Free Online Reflex Game","description":"Click the moles as they pop up! A classic reflex-testing arcade game.","category":"games-puzzles","url":"https://toolcroft.com/whack-a-mole/"},{"slug":"wifi-qr-generator","title":"Wi-Fi QR Code Generator - Share Wi-Fi Credentials Instantly","description":"Generate a scannable QR code for your Wi-Fi network. Guests can scan it with any modern phone camera to connect instantly - no typing required. Supports WPA, WEP, and open networks.","category":"dev-tools","url":"https://toolcroft.com/wifi-qr-generator/"},{"slug":"wind-chill-calculator","title":"Wind Chill Calculator - Feels-Like Temperature & Frostbite Risk","description":"Calculate the wind chill temperature using the NWS formula. Enter air temperature and wind speed to get the feels-like temperature, frostbite risk time, and safety recommendations.","category":"health-fitness-calculators","url":"https://toolcroft.com/wind-chill-calculator/"},{"slug":"word-ladder","title":"Word Ladder - Transform Words One Letter at a Time","description":"Transform one word into another by changing one letter at a time, with each step being a valid word.","category":"games-puzzles","url":"https://toolcroft.com/word-ladder/"},{"slug":"zakat-calculator","title":"Zakat Calculator - Calculate Your Annual Zakat Obligation","description":"Calculate your annual Zakat obligation. Enter your zakatable assets, liabilities, and current gold/silver prices. 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