Repair PDF Files Online
Fix corrupted or damaged PDF files with our powerful repair tool. Upload your broken PDF and our multi-strategy repair engine will attempt to recover the content. Free, fast, and secure.
Why Repair PDF Files?
PDF files can become corrupted during incomplete downloads, email transmission errors, disk failures, or software crashes. A corrupted PDF may fail to open, display blank pages, show error messages, or have missing content.
Our repair tool uses multiple strategies including structure repair, cross-reference rebuilding, and deep content recovery to fix common PDF corruption issues.
How to Repair a PDF
- 1
Upload your corrupted PDF file.
- 2
Click Convert — our engine tries multiple repair strategies automatically.
- 3
Download the repaired PDF file.
- 4
Verify the repaired file opens correctly in your PDF viewer.
Key Features
- Multi-strategy repair engine
- Fixes broken cross-references
- Rebuilds damaged structure
- Deep content recovery
- Fast cloud-based processing
- Free and secure — files auto-deleted
Frequently Asked Questions
What types of corruption can be fixed? ▼
Our tool can fix broken cross-reference tables, damaged object streams, linearization issues, and minor structural corruption. Severely damaged files where content data is lost may not be fully recoverable.
How does the repair process work? ▼
We use a multi-strategy approach: first qpdf for structure repair, then MuPDF for deep garbage collection, and Ghostscript as a last resort for complete re-rendering.
Will I lose any content during repair? ▼
The repair process aims to preserve all content. In most cases, text, images, and formatting are fully recovered. However, severely corrupted sections may not be recoverable.
Can I repair password-protected PDFs? ▼
You'll need to unlock the PDF first using our Unlock PDF tool, then repair the unprotected version.