Repair PDF Online — Fix Damaged or Corrupt PDF Files
Try to recover damaged, corrupt or unreadable PDF files: broken structure is rebuilt and readable pages are restored. Free and private.
Choose files
or drag and dropPDF
Your files never leave your device — everything runs locally in your browser.
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How it works
- 1
Select the file
Upload the PDF that won’t open or shows errors.
- 2
Analysis
The tool checks the file structure and rebuilds broken references.
- 3
Recover
Readable pages are rescued; where needed, pages are re-rendered.
- 4
Download
Download the repaired file and check the result.
Typical uses
- Interrupted downloads or email attachments that won’t open.
- PDFs showing errors such as “file is damaged”.
- Files from old scanners or programs with a broken structure.
Tips
- Nothing can restore content that is missing from the file — for interrupted downloads, downloading again often helps.
- Test the repaired file in a second PDF viewer.
- Always work on a copy of the original file.
Related guides
Lightning Fast
All processing happens instantly in your browser — no server uploads needed.
100% Private
Your files never leave your device. Everything is processed locally.
Free Forever
No sign-up, no watermarks, no file limits. Completely free to use.
98 Languages
Available in 98 languages worldwide.
Frequently Asked Questions
Which PDFs can be repaired?
Files with a damaged structure (broken cross-reference table, truncated downloads, invalid objects) can often be rebuilt. Content that is missing from the file cannot be restored.
What happens to unreadable pages?
Readable pages are recovered; if the structure cannot be rebuilt, pages are rendered and saved as images.
Is it free?
Yes, free and processed locally.