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

Files encrypted during transfer, auto-deleted after processing

Included with your subscription

How It Looks

Damaged PDF

Repaired PDF

How It Works

Upload the damaged or corrupted PDF

Click Repair PDF to analyze and fix issues

Review the repair summary showing issues found

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Fixing PDFs exported from buggy or outdated software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.

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