About Toolcroft

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.

For people and assistants: browse the full directory, the private-by-design comparison, a plain-text catalog at /llms.txt, or machine-readable /tools.json.

Why we built this

Most online utility sites work by sending your input to a server, doing the computation remotely, and sending the result back. That model has practical advantages for the operator: they can change the implementation freely, gather analytics, and run heavier algorithms. But it also means a stranger's server briefly holds whatever you typed in or whatever document you dropped on the page. For most tasks that is fine. For some it isn't.

Static, browser-only tools have always been possible. The web platform has had the math libraries, file APIs, and cryptography support to do calculator-, converter-, and file-utility-class work locally for years. The reason most sites don't ship it that way is pragmatic, not technical. Toolcroft is what happens when "private by default" wins the tradeoff.

What you can expect

• Every tool is a static HTML page with the script that does the work. No login, no account, no signup walls.
• Inputs you provide stay on your device. We can't see them; we have no servers that handle tool data.
• Continuous-integration tests verify the privacy promise on every change to the site. A change that introduces an unexpected outbound request fails the build.
• Pages are designed to be fast on mobile, accessible to keyboard and screen-reader users, and readable in light or dark mode.

How the site is funded

Toolcroft is supported by ads served by Google AdSense. Ads are the only third-party code on each page. We do not use affiliate tracking inside tools, we do not sell email newsletters, and we do not gate functionality behind a paid tier. Where consent is required by law (the EU, UK, California, Brazil), we ask for it through Google's Funding Choices consent banner. Where it isn't, you see ads without a banner, like most sites.

We use our own analytics service (SquidWhipped Analytics) to count anonymous page views so we can tell which tools people use. It doesn't use cookies, doesn't fingerprint visitors, and runs on infrastructure we own — your data is never shared with any third party. The full breakdown is on the privacy page.

Contact

Bug reports, feature ideas, or general feedback: contact@toolcroft.com.