About FileTinker

We make everyday file tasks quick and free: compress and resize images, convert between formats, merge and split PDFs, sign documents, unlock password-protected files, trim audio and video, run OCR on scans, generate favicons, QR codes and passwords, and more — all from one place.

Every tool is designed to do one job well, with no sign-up, no watermarks, and no file-size paywalls.

FileTinker is built and maintained by the FileTinker Team, a small independent group of developers who kept running into the same problem: the quickest way to compress a photo or sign a PDF was to hand a private file to a website you had never heard of, wait for an upload, and hope it was deleted afterwards.

Browsers can do that work themselves now. So we built the toolkit we wanted — one that never asks you to upload anything in the first place. We are not a venture-funded startup and we do not have a sales team; the site is a long-running side project that pays for itself through ads.

Unlike most online file tools, FileTinker runs entirely in your web browser. When you open a tool and add a file, the work happens on your own device using modern browser technology — the file is never uploaded to a server and nothing is stored online.

That means your documents, photos and recordings stay private, which matters for sensitive files like ID scans, contracts and personal media. Most tools even keep working offline once the page has loaded.

You do not have to take our word for it: open your browser's network panel while a tool runs and you will see your file go nowhere. Some tools do fetch a one-time component — the text recognition engine downloads its language model, for example — but that traffic flows towards you, never the other way.

The heavy lifting happens with standard browser technology: the canvas for images, the Web Audio and MediaRecorder APIs for sound and video, and WebAssembly builds of established open-source libraries for PDFs, text recognition and encryption. Nothing is a wrapper around someone else's upload service.

That approach has honest limits, and we would rather name them than hide them. Video re-encoding is bound by what your browser can record, so a long clip takes as long as the clip itself. Enlarging an image sharpens nothing that the camera never captured. Where a tool trades quality for size, the page says so.

Our guides are written and fact-checked by the FileTinker Team. Before a guide is published, every claim it makes about one of our tools is checked against the code that actually runs it — the compression setting used, the format that comes out, the case where a file passes through untouched.

When a tool has a caveat, the guide states it. When a widely repeated piece of advice is wrong — the idea that a photo can be made print-ready by changing its DPI field, for instance — we say that too. Platform limits and specifications change, so guides carry a publication date and we revisit the ones that age fastest.

FileTinker is free to use. To keep it that way, some pages show ads. We don't sell your data — we can't, because your files never reach us. See our Privacy Policy for how advertising cookies work and the choices you have.

The site is fully translated into every language we support, guides included, and works on phones, tablets and computers. We're continually adding new tools — if there's something you'd like to see, or a guide you think gets something wrong, we'd genuinely like to hear from you on our Contact page.