Offline PDF Editor

Free offline PDF editor.

Need to edit PDFs without internet? Try the first browser-based offline editor powered by WebAssembly. No install, no cloud.

Start offline editingConvert PDF →

No account needed · zero uploads, verifiable in DevTools

–Works completely without Wi-Fi
–No desktop exe/dmg installs
–Enables secure court & flight editing
–Compress, sign, rotate, and merge
–Free, no daily limit
● SecurePDFcontract.pdf2.4 MBWASMYour browserlocalDOCXcontract.docx1.9 MBConverted in 1.8 s0 bytes sent to any server↓SaveNO SERVER

Edit PDFs Offline Without Installing Desktop Software

Traditionally, if you wanted to edit a PDF offline (on a flight, in a secure facility, or during a network outage), you had to install heavy desktop applications like Adobe Acrobat. PrivaPDF offers a lightweight, modern alternative: a web app that works offline.

How Offline Browser Apps Work

Using progressive web app (PWA) standards and WebAssembly, we download the necessary rendering engine directly to your browser's sandbox. The next time you are offline, you can open your browser, visit the site, and use all the tools. Your local CPU processes the documents, allowing you to edit files on air-gapped computers securely.

Don't trust us.
Verify it yourself.

Open DevTools → Network while converting. You'll see zero outbound requests. Every byte stays inside your browser tab.

–Works offline, no internet connection required
–Nothing is uploaded, ever
–Designed for sensitive documents
ZERO OUTBOUND CALLS
ElementsConsoleNetworkSources
FilterAll · XHR · JS · Wasm
NameStatusTypeSize
converter.worker.js200script48 kB
pdf.worker.wasm200wasm312 kB
✓ No requests to external servers
Powered byWebAssembly·Web Workers·pdf-lib·mammoth.js·Service WorkerAll open source · auditable in DevTools

Common questions

How does a website work offline?

PrivaPDF uses Service Workers to cache application assets on your device. Once visited, the page can be reloaded and run with internet completely disabled.

Is it free to use offline?

Yes. Every tool works offline for free, with no internet, no sign-in, and no account required.

Is my file uploaded to a server?

No. All processing happens entirely in your browser using WebAssembly. Your file never leaves your device.

Related tools

Compress PDF < 100KB →Reduce PDF Size →Secure Offline PDF Compressor →Merge PDF →Compress PDF →PDF to Word →