pdf repair tool
Upload a corrupted or damaged PDF — we'll analyse and attempt to recover what we can. No upload. Runs in your browser.
Click or drag your PDF here
Supports corrupted, truncated, and damaged PDF files up to 100 MB
Analysing file structure…
Repair report
File name—
File size—
PDF version—
Pages recovered—
Issues detected—
Issues repaired—
Repair mode used—
Issues found
PDF repair runs entirely in your browser — no file is uploaded to any server. Severely corrupted or overwritten files may not be fully recoverable. Always keep a backup of the original file before attempting repair.
Common PDF issues
| Cross-ref error | Structural |
| Broken stream | Content |
| Missing fonts | Font |
| Truncated file | Structural |
| Bad page tree | Content |
| Corrupt images | Image |
| Invalid header | Repairable |
What is PDF corruption?
PDF files can become corrupted from interrupted downloads, sudden power loss during saving, storage media errors, software crashes, or virus damage. Even a few corrupted bytes can make an entire file unreadable.
How the repair works
The tool reads the raw bytes of your PDF, identifies structural anomalies, attempts to rebuild the cross-reference table, recover content streams, and reconstruct the page tree — then reports what was found and fixed.
FAQ
Is my file uploaded anywhere?
No — all repair processing runs in your browser using JavaScript. Your file never leaves your device.
Can all PDFs be repaired?
Not always. Severely overwritten or physically damaged files may have unrecoverable sections. The tool recovers as much content as possible.
What causes PDF corruption?
Interrupted downloads, storage errors, incomplete saves, software crashes, and virus damage are the most common causes.
What's the file size limit?
Up to 100 MB. Larger files may slow your browser — use the Quick scan mode for large files.