SEO & Marketing

Free, browser-based SEO and marketing utilities - preview search snippets and social cards, generate meta and schema markup, build UTM links, and audit on-page content. Nothing you paste is uploaded.

Heading Structure Analyzer - Outline & SEO Checker

Paste any HTML to extract and visualize the H1–H6 heading outline. Flags multiple H1s, skipped levels, and empty headings for SEO review.
Keyword Density Analyzer - Check Word Frequency & TF

Analyze any body of text for word frequency, keyword density %, and n-gram patterns. Toggle stop-word filtering, pin target keywords, and see a visual bar chart.
Meta Tag Generator - OG & Twitter Card Builder

Generate complete HTML <head> meta tags: title, description, canonical, Open Graph, and Twitter Card. Preview and copy the ready-to-paste code block. All processing is local.
Open Graph Preview - Social Card Simulator

Preview how your page looks when shared on Facebook, X (Twitter), LinkedIn, Discord, and Slack. Paste your page HTML or fill in the fields manually. No network requests.
Schema Markup Generator - JSON-LD Structured Data

Generate valid JSON-LD schema markup for FAQPage, HowTo, Article, Product, LocalBusiness, BreadcrumbList, and more. Form-driven, inline validation, pretty/minified toggle.
SERP Preview - Google Snippet Simulator

Preview how your page will look in Google search results. See real pixel-width title and description limits for desktop and mobile. Instantly check truncation.
Title Tag Checker - Bulk Pixel-Width Validator

Paste multiple page titles (one per line) to instantly see their pixel widths, pass/fail against Google thresholds, and optionally append a brand suffix.
UTM Builder - Campaign URL Builder & QR Code

Build UTM-tagged campaign URLs for Google Analytics. Round-trips existing UTM params, adds optional lowercase normalization, generates a QR code, and copies as plain URL or Markdown link.