About Filoraio
PDF tools that respect your file — and your privacy.
Filoraio is a fast, free PDF toolbox that runs entirely in your browser. 24+ tools — merge, split, compress, convert, sign, watermark, OCR, edit — and not a single one uploads your document to a server.
Every other PDF tool wants your file.
Open any “free PDF” competitor and the workflow is identical: upload your file, wait, download. Your document — a contract, a CV, a medical scan, a financial record — sits on someone else’s server for hours or days. Some retain it indefinitely. Some train models on it. Most never tell you exactly which.
We thought that was a strange default. Modern browsers can already do the heavy lifting — open-source PDF engines run as WebAssembly modules, OCR runs locally on your device, the Canvas API handles image recompression. Every operation a typical PDF tool performs can run on your device, in seconds, with no server round-trip.
So we built Filoraio that way from day one. Your file is read into your browser’s memory, transformed locally, and downloaded back to your machine. Nothing leaves. You can verify it yourself — open the browser’s DevTools, switch to the Network tab, and watch it stay quiet while you work.
Your file moves through four steps. None of them touch a server.
- 01
You pick the file
Drag and drop, or use the file picker. The browser reads the bytes into memory — the same API any local app uses.
- 02
Your CPU does the work
Open-source PDF and OCR engines run locally as WebAssembly modules. The operation completes in seconds on most documents — no upload, no waiting on a server queue.
- 03
The result stays local
Output bytes are wrapped in a Blob, given a temporary URL, and offered to you as a download. No upstream POST, no logging.
- 04
Network stays asleep
No request leaves your device while you work. The tool works offline once the page is loaded — close DevTools' Network tab and confirm.
Four convictions, encoded in every tool.
Files are private by default
A PDF can contain medical history, financial records, a contract under negotiation, or a draft no one outside two people should see. The right default is: it stays where it started.
Speed beats “more features”
A 50-page merge that takes 90 seconds because it round-trips through a server is broken. Local processing returns in 2 seconds. That difference is the entire user experience.
Watermarks are theft
A “free” tool that stamps its logo across your output isn’t free — it’s rented advertising space on your document. We don’t do that and never will.
Tools should work without an account
If a document task requires creating an account and verifying an email, the friction has eaten the time the tool was supposed to save. Every Filoraio tool is one click from useful.
What we can’t do — yet.
Browser-only architecture has real edges. Word-to-PDF conversion can’t match what Word’s native export produces — we use Helvetica throughout because the browser can’t embed your installed fonts. Complex multi-column layouts may need cleanup. PDF-to-Excel and PowerPoint-direction conversions need a server-side engine to hit professional quality, so they’re intentionally not shipped yet.
We’d rather ship 24 tools that work well than 27 tools where 3 are quietly mediocre. As demand grows and the site generates revenue to fund server infrastructure, the remaining tools will ship — built the same way: with explicit privacy guarantees and honest copy about what each one actually does.
Try a tool. Verify the privacy claim yourself.
Open your browser’s DevTools, switch to the Network tab, then drop a PDF onto any tool. Watch the tab stay quiet while your file is processed. That’s the entire product.
Built and maintained by the Filoraio team.