Repair a PDF
If a PDF won’t open or throws errors, Papyrus can try to rebuild its cross-reference tables and object streams to recover what’s readable — without sending your file anywhere.
How it stays private
Frequently asked
Does my file get uploaded to a server?
No. Every operation on Papyrus runs inside your browser using WebAssembly. Your file is read from disk into your tab’s memory, processed there, and written back out as a download. Watch the network counter in the header — it stays at zero from the moment you add a file.
Will it always work?
Repair can fix many structural problems, but a file with destroyed page content can’t be fully recovered. It’s a best-effort rebuild.
Does it work offline?
Yes. After your first visit the app and its WebAssembly engines are cached by a service worker, so you can process files with no internet connection at all — the ultimate proof nothing is being uploaded.
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