Repair PDF
Fix a damaged or unopenable PDF by rebuilding its structure with qpdf, privately in your browser.
How to repair a PDF
- 1
Add your PDF
Drop or select the damaged PDF. Nothing is uploaded.
- 2
Repair
qpdf rewrites the file on your device, rebuilding the cross-reference table and structure.
- 3
Download
Get a clean, rebuilt PDF that opens normally.
Why repair a PDF in your browser?
A corrupt PDF is often a sensitive document you still need to open. Repairing locally with qpdf keeps it on your device instead of uploading it to an online recovery service.
Frequently asked questions
What can it fix?+
Many "cannot be opened" PDFs: a damaged or shifted cross-reference table, junk bytes before the header, and assorted structural inconsistencies. qpdf rebuilds the file from the objects it can read.
What can it not fix?+
A file that is genuinely truncated or missing its content has nothing left to recover. If qpdf cannot rebuild it, the tool tells you instead of producing a broken file.
Is my file uploaded?+
No. qpdf runs as WebAssembly in your browser, so your PDF never leaves your device.
Does it work offline?+
Yes. After the first visit it keeps working with no connection, because all processing is local.