About M2Toolkit

What M2Toolkit is

M2Toolkit is a collection of 493 free online tools: calculators, unit converters, and tools for images, PDFs, text, code, SEO and design. Each tool does one job, explains how it works, and gets out of your way.

How the tools work

Most tools run entirely in your web browser. When you compress a photo, merge a PDF or format JSON, the work happens on your own device using built-in browser technology. Your files aren't uploaded to us. Every tool page says plainly where its processing happens.

A few tools on our roadmap — like PDF compression, password-protecting PDFs and AI rewriting — need a server or a large AI model. We list those as “Coming soon” instead of shipping something that only pretends to work.

How we check accuracy

• Calculators use established, published formulas, and each one shows its formula and working so you can verify the result yourself.
• Calculations and text transformations are covered by automated tests with known answers.
• Health, finance and education tools state their assumptions and are clearly marked as estimates, not professional advice.
• Every tool page shows the date it was last reviewed.

Who writes the guides

Guides are written by the same team that builds and tests the tools. We don't publish articles to fill space: each guide answers a specific question and links to the tool that helps you do it.

How the site is funded

The tools are free. To cover hosting and development, the site may show a limited number of clearly labelled ads. Ads are never placed inside a tool's controls or disguised as buttons.

Get in touch

Found a bug, a wrong result or a tool you'd like to see? Contact us — we read every message.