About Toolonit

What Toolonit is

Toolonit is a collection of free online tools for everyday jobs. The image tools resize, crop, convert, compress and rotate pictures, view and remove EXIF data, make favicons, turn images into Base64 and read the text in them. The PDF tools merge, split and reorder PDFs, turn images into a PDF and PDF pages into images, and copy out their text. The big number calculator works out long expressions with huge numbers exactly, in decimal, hex, octal or binary. Each tool does one job well and works right in your web browser, with no account, no sign-up and nothing to install.

Toolonit is an independent site, built and run under the name Toolonit.

Why everything runs on your device

Most online tools upload your file to a server, process it there and send the result back. That means waiting for the upload, trusting someone else's server with your photos and documents, and hoping the copy is deleted afterwards.

Toolonit works the other way round: the tool comes to your file. The processing code is loaded into the page and runs on your own device, so your files and text are never uploaded. Toolonit has no server that receives them.

• Private: your files never leave your device.
• No upload wait: even large files are processed right where they are.
• Independent of the connection: once a tool has loaded (and, for text recognition, its model), the work itself needs no internet connection.
• Free and open to everyone: there is no account to create.

How it works

The heavy work — decoding and encoding images, recognizing text, removing backgrounds, merging and splitting PDFs, calculating with huge numbers — is done by engines compiled to WebAssembly, most of them written in Rust, which run at close to native speed in every current browser. PDF pages are drawn and their text read by pdf.js, Mozilla's open-source PDF reader. The text recognition and background removal models are downloaded once from this site and then kept in your browser.

The tools, their models and the fonts all come from Toolonit's own site. Only two things come from other companies: the ads from Google AdSense that keep the site free, and Cloudflare Web Analytics, which counts visits without cookies (see the Privacy Policy). Toolonit is built with open-source software, listed on the Open-source licenses page.

Get in touch

Questions, bug reports and ideas for new tools are welcome by e-mail at [email protected].