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Security & Privacy
Repair a Damaged PDF
Interrupted downloads, failed email attachments and faulty exports can leave PDFs unreadable. Repair rebuilds the internal cross-reference structure and recovers the pages it can.
- Runs in your browser — no upload
- Free — no sign-up
How to use Repair PDF
- 1Open the damaged PDF.
- 2Repair it: the report lists what was wrong and what was fixed.
- 3Check the recovered pages and download the repaired file.
Why use Repair PDF on PDF NOVA
Structure reconstruction
Broken cross-reference tables, cut-off endings, junk before the header and lost page lists are rebuilt so readers can open the file again.
Files stay on your device
Processing happens in your browser. Your document is never uploaded to a server, so there is nothing to delete afterwards.
Processing on your device
Repair PDF processes your file in your browser on your device. The file is not uploaded for processing. Download the result to keep a permanent copy. Your active PDF is saved locally in this browser for recovery across refreshes. Close Document removes it; recovery expires after 24 hours and is cleaned up when PDF NOVA next opens. Unsaved changes are not restored.
Related PDF tools
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Frequently asked questions
Are my files uploaded anywhere?
No. This tool runs entirely in your web browser using JavaScript and Web Workers. The file is read from your device, processed in memory and saved back to your device.
Can every PDF be repaired?
Not always. If parts of the file are missing entirely, those pages cannot be recovered, but the remaining content usually can.