About tools.studio
A free tool for every file. Each one does a single job, and does it without sending your files anywhere.
Everything runs in your browser
Most online file tools upload your document to a server, do the work there, and send it back. We don't. Every tool here reads and rewrites your file locally, with WebAssembly and the same browser APIs that run the web pages you already trust. Your photos, PDFs, and spreadsheets are handled on your own device and never leave it. The nice side effect: no upload wait, and no file-size ceiling that some server decided on for you.
One tool, one job
Each tool lives at its own page and does exactly one thing: merge PDFs, convert HEIC to JPG, compress an image, turn a CSV into Excel. No bundled suite you have to learn, no sign-up wall, no watermark, no "upgrade to download." Open the page, drop your file, get your result.
Built on open source
The hard parts are handled by open-source libraries you may already know: Mozilla's pdf.js, the jSquash image codecs, mediabunny for audio and video, and others. Each tool page credits the libraries it uses, and the full list lives on the open source page. None of this exists without the people who maintain them.
Privacy by design
Nothing is uploaded, so there's nothing for us to store, leak, or sell. No accounts. No tracking cookies. No analytics that quietly watch where you go. You can read the details on the privacy page.