Repair PDF
Fix corrupted, damaged, or malformed PDF files. Repairs broken internal structures, missing cross-references, and other common PDF issues.
100% Private
Instant Processing
Browser-Based
Features
Fix corrupted or damaged PDF files
Repair broken cross-reference tables
Fix malformed internal PDF structures
Recover PDFs that fail to open in viewers
Reports number of issues found and fixed
Powered by PDFSub Engine
Files encrypted during transfer, auto-deleted after processing
Included with your subscription
How It Looks
Damaged PDF
Repaired PDF
How It Works
1
Upload the damaged or corrupted PDF
2
Click Repair PDF to analyze and fix issues
3
Review the repair summary showing issues found
4
Download the repaired PDF file
Common Use Cases
Recovering PDFs that crash viewers or refuse to open
Fixing files corrupted during download or transfer
Repairing PDFs with missing or broken internal links
Preparing problematic PDFs for further processing
Fixing PDFs exported from buggy or outdated software
Frequently Asked Questions
What types of PDF damage can be repaired?
The repair tool fixes broken cross-reference tables, malformed internal structures, missing stream lengths, invalid object references, and other structural issues. It cannot recover deleted content or fix encrypted files without the password.
Will repairing change my document content?
No. The repair process fixes the internal PDF structure without modifying the visible content - text, images, and layout remain unchanged.
What if the repair fails?
Some PDFs may be too severely damaged to repair. If the tool reports it cannot fix the file, the original data may be unrecoverable. In that case, try requesting the file again from the original source.
Does this use AI credits?
No. PDF repair does not use AI and does not consume any credits.
Is my file processed securely?
Your files are processed securely by the PDFSub Engine - an isolated server with no internet access. Files are encrypted during transfer and auto-deleted after processing.