About FormFix
FormFix is a free, open-source toolkit for everyday image and PDF tasks — built around a single principle: your files never leave your device.
Our mission
Most "free" online tools upload your files to a server you don't control. That's slow, it's a privacy risk, and it breaks the moment you lose internet. FormFix flips the model: every tool runs entirely in your browser using native Web APIs — Canvas, OffscreenCanvas, Web Workers, WebAssembly, and the File System Access API where supported. Your laptop or phone does the work, not a remote box.
The result is a toolkit that is private by default, fast even on flaky connections, and free of subscriptions, signups, and dark patterns. Source code is on GitHub under an open license — audit it, fork it, self-host it.
How it works
- 1
Pick a file
Choose an image or PDF from your device. The file is read into browser memory — no upload happens.
- 2
Process locally
Your CPU does the work via WebAssembly, Canvas, and Web Workers. Watch progress in real time, cancel anytime.
- 3
Download result
Save the output to your device. The original and processed data are discarded from memory when you close the tab.
Why FormFix
Privacy by design
Files never leave your device. No upload servers, no third-party processing.
Fast and free
No round-trip to a server means instant results. Every tool is free with no limits.
No signup, no ads
Open the page, use the tool, leave. We never ask for your email or show invasive ads.
Works offline
A Service Worker caches the app shell. After first load, tools keep working without internet.
Tech stack
FormFix is built with Astro 7 for static-first HTML, Tailwind CSS 4 for styling, TypeScript in strict mode, and a tiny set of vetted libraries: @libpdf/core for PDF manipulation, pdfjs-dist for PDF rendering, qrcode for QR generation, and tesseract.js for OCR. Heavy tiers load lazily only when you open the tool that needs them, keeping the homepage under 5 KB of JavaScript.
Ready to try it?
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