About Toolzep

Toolzep is an independent collection of 546 free online tools and more than a thousand practical guides, built for people who make things on the web: writers, developers, students, marketers, freelancers and small-business owners. The project started with a simple frustration — most "free tool" websites demand signups, bury the tool under a wall of text, or quietly upload your files to a server you know nothing about. We built the opposite of that.

How the tools work

Every calculator, converter, formatter and generator on this site runs on your device, using plain JavaScript in your browser. When you count words, format JSON, resize an image or merge a PDF, the data never travels to our servers — because it never needs to. A small number of tools genuinely require live information (for example, a currency rate or your public IP address); those tools clearly say so and make a single read-only request to a public API.

Tools also load their processing libraries on demand. A tool that needs a PDF engine only downloads that engine when you actually open it, which keeps every page fast on mobile connections and works offline after the first visit for most tools.

Editorial standards

Each tool ships with a full methodology guide: the exact formula or algorithm used, worked examples you can verify by hand, honest limitations, and answers to the questions people actually search for. Where a calculation involves health, money or law, we cite the published standard it follows (WHO BMI categories, Mifflin-St Jeor, FLSA overtime, IOM ranges and similar) and we say clearly that the result is an estimate, not professional advice. When research does not support a claim, we leave the claim out rather than softening it.

How the site is funded

Toolzep is free and needs no account. The site is supported by advertising placed away from tool controls, and clearly labelled. We never disguise ads as tool buttons, and no feature is paywalled. See our affiliate disclosure for details of any commercial relationships.

Contact

Bugs, tool ideas and corrections are genuinely welcome — the fastest tools on this site were suggested by users. Reach us through the contact page or at hello@toolzep.com.