PDFsuite
A browser PDF editor with 28 tools that runs entirely on WebAssembly.
Built for anyone who has to merge, compress, sign, redact or OCR a PDF but balks at uploading a contract, an ID or a bank statement to some random online converter.
The hard problem: do real PDF work — 28 distinct operations, OCR included — entirely in the browser, offline, fast enough to actually use, with the file never leaving the device.
Run everything in the browser. Files never upload.
Every other online PDF tool sends your document to a server. For the exact documents people most need to edit — legal, financial, identity — that's the whole risk. PDFsuite compiles the PDF and OCR engines to WebAssembly so all 28 tools run on-device.
The tradeoff is engineering load and browser limits: a larger first load, and very large files are bound by the tab's memory rather than a beefy server. In exchange there's nothing to upload, it works fully offline, there are no per-file size caps, and there's no server bill — so the privacy guarantee is structural, not a policy you have to trust.
One pipeline behind 28 tools.
Rather than 28 disconnected features, the tools share a single engine: pdf.js for rendering, pdf-lib for document operations, and Tesseract for OCR — stitched into one consistent flow. It keeps the UX coherent and means a fix or speed-up in the core lifts every tool at once.
Real PDF work — OCR included — inside a browser tab.
Server tools get all the memory and native libraries they want. In the browser I had a tab's memory ceiling and no native code, yet still needed 28 genuine operations, OCR among them. The answer was WebAssembly: pdf.js renders, pdf-lib manipulates the document, and Tesseract runs OCR — all compiled to WASM and stitched into one pipeline, so every tool shares the same engine and a speed-up in the core lifts all 28 at once. Very large files are bound by the tab rather than a beefy server, which is the honest cost of never uploading.
your file · stays on your device
↓
browser · WebAssembly engine
├─ pdf.js render
├─ pdf-lib merge · split · sign · redact
└─ Tesseract OCR
↓
result · downloadOne pipeline behind all 28 tools. The file is never sent to a server.
- 28 tools
Merge, compress, sign, redact, OCR and convert — the full kit in one place.
- 100% local
All processing runs via WebAssembly on your device; nothing is ever uploaded.
- Installable PWA
Install it, use it offline, and work on files with no size limits.
- Flat pricing
$29/year, 7-day free trial — no per-file or per-seat games.
Same thesis as a privacy-first native app, delivered on the open web: a full PDF toolkit where the sensitive document physically never leaves your browser. Offline-capable, no size limits, one flat price.