clevr.tools – Free client-side browser utilities with no data uploads or signup

Summary: clevr.tools offers a free suite of browser-based utilities including file converters, calculators, typing tests, text tools, and a daily number puzzle. All tools run entirely client-side, ensuring no data leaves the user’s device and no accounts or tracking are required.

What it does

clevr.tools provides file compression and conversion, over 40 calculators, typing practice and tests, text and developer utilities, and a daily math puzzle, all operating fully within the browser without server interaction.

Who it's for

It is designed for users needing privacy-focused, no-signup tools for file handling, calculations, typing, and text processing directly in their browser.

Why it matters

It eliminates the need to upload personal files to external servers, protecting user data by processing everything locally without tracking or accounts.