Repair PDF
Rebuild a damaged or corrupted PDF in your browser. Nothing is uploaded to a server.
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PDF repaired
Structure rebuilt in your browser. Nothing was uploaded to our servers.
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How to use Repair PDF
- 100% private — files are processed securely and never saved on external servers.
- Fixes corrupted cross-reference tables, unreadable fonts, and broken page trees.
- If the file is severely damaged, text elements are prioritized for maximum recovery.
- Password-protected files must be unlocked before starting the repair process.
- Works on all devices without installing software or browser plugins.
Common Uses
Quick ideas to get the most out of Repair PDF
- Recover corrupted downloads — Fix PDFs that failed to download properly or broke during transfer.
- Restore unopenable documents — Repair files that trigger error messages when opening in PDF readers.
- Fix damaged email attachments — Recover documents that became corrupted while being sent via email.
- Retrieve unreadable text & images — Rebuild internal file structures to access lost content.
- Recover legacy or old files — Fix outdated PDF files that no longer open correctly in modern software.
- Salvage broken forms & invoices — Reconstruct essential business documents, forms, and receipts.
- Fix cross-reference table errors — Repair underlying file index corruptions that prevent page loading.
- Extract healthy pages — Rebuild readable sections from partially destroyed or damaged files.
Your files never leave your device. All reconstruction runs locally in your browser.
Rebuilds broken XREF tables, bad headers, and unreadable page tree structures.
No server queues or uploading lag. Scans and recovers damaged PDFs in seconds.
Recovers text, vectors, images, and layout elements without reducing quality.
Rewrites a valid PDF structure when the content is still readable. Severely truncated files may not recover.
No account required. Repair your damaged PDF files instantly without signing up.
Frequently Asked Questions (FAQ)
Everything you need to know about repairing PDF files
What types of PDF corruption can this tool fix?
It works best on structural problems when the content is still readable:
- Broken XREF tables — wrong object offsets
- Damaged headers — “file is damaged” style errors
- Page tree issues — pages that fail to open
Severely truncated or incomplete downloads often cannot be recovered in the browser.
Will repairing a PDF affect quality or text content?
No. When recovery succeeds, text, images, fonts and layout stay at their original quality. The tool rewrites the structure; it does not recompress your content.
Why do some corrupted PDF files fail to repair?
Some damage is data loss, not just a broken structure:
- Empty or near-empty files (0 KB)
- Interrupted downloads (file cut mid-way)
- Files overwritten with random or zero data
In those cases you need a fresh copy of the original document.
Can I repair password-protected or encrypted PDFs?
Encrypted files should be unlocked first. This tool does not bypass passwords. Unlock the PDF, then try repair on the unlocked file.
Are my files safe? Do you upload them to any server?
No. Repair runs 100% in your browser. Your PDF never leaves your device.
What does the tool actually do to my PDF?
It loads the file, rebuilds a valid internal structure, and saves a clean PDF. That often fixes broken cross-reference tables and similar structure errors. It cannot invent missing page content if the data is gone.
Is there a file size limit or usage quota?
No daily quota. For best results keep files under about 100 MB. Larger files may work on desktop but can be slower on mobile.
Does it work on mobile browsers?
Yes. It works on modern mobile browsers (Chrome, Safari, Firefox and Edge) on Android and iOS. For large or heavily damaged files, a computer is usually more reliable.
Ready to repair your corrupted PDF?
Upload your damaged file now and restore it when the structure can still be rebuilt.
Start Repairing →