Free PDF Repair Tool - Fix Corrupted PDF Files Online
Recover content from damaged or corrupt PDF files. The tool reprocesses the document structure and produces a clean, readable PDF. Runs in your browser.
What is Repair PDF?
Corrupt or damaged PDF files can result from interrupted downloads, faulty exports from software, storage errors, or incomplete file transfers. Our free PDF Repair tool attempts to recover the document by loading the raw PDF data and rebuilding it into a clean, valid PDF structure.
The repair process uses pdf-lib's parsing capabilities to read whatever valid content exists in the file, then writes a fresh, standards-compliant PDF. Many common corruption issues — such as corrupted cross-reference tables, incomplete trailers, and minor structural damage — are fixed by this process.
While no repair tool can guarantee recovery of severely corrupted files where the core content data is missing, this tool successfully recovers a wide range of damaged PDFs that other viewers refuse to open. It's worth trying before concluding that a file is unrecoverable.
All processing is done locally in your browser. The original file is read but never modified; a new clean copy is generated and downloaded. Your document never leaves your device.
Powerful Features
Everything you need in one amazing tool
Structure Repair
Fixes corrupted cross-reference tables, incomplete object streams, and broken trailers.
Clean PDF Output
Generates a fresh, standards-compliant PDF from whatever valid content can be read.
Original File Untouched
The original file is only read, never modified. A new clean file is created.
Fully Private
Your damaged document never leaves your device. Processing is entirely in-browser.
Standards Compliant
Output follows PDF specification, ensuring compatibility with all viewers.
Fast Recovery
Repair attempts complete in seconds. No server queue or waiting time.
How It Works
Get started in 4 easy steps
Upload Damaged PDF
Select the corrupt or damaged PDF file you want to repair.
Analysis
pdf-lib scans the file structure and identifies valid content and broken sections.
Repair & Rebuild
A new, clean PDF is constructed from the valid content found in the damaged file.
Download Repaired PDF
If repair succeeds, download the clean PDF and verify your content is recovered.
Why Choose Our Repair PDF?
Stand out from the competition
Safe to Use
Original file is never altered. The repair creates a new clean copy.
Handles Common Corruption
Fixes cross-reference errors, truncated files, and broken object structures.
No Server Risk
Sensitive files never uploaded. Repair happens entirely in your browser.
First Thing to Try
Quick, free repair attempt before spending money on professional recovery services.
Free First Attempt
Always try the free repair before paying for expensive professional data recovery software.
Content Preserved
Recovers and keeps all intact content. Only truly unreadable broken segments are discarded.
Perfect For
See how others are using this tool
Interrupted Downloads
Recover PDFs that were incompletely downloaded due to connection drops.
Storage Errors
Fix PDFs corrupted due to disk errors, bad sectors, or interrupted saves.
Faulty Exports
Repair PDFs generated by buggy software that produced invalid file structures.
Email Attachment Issues
Fix PDFs that were corrupted during transmission as email attachments.
Failed Downloads
Fix PDFs that became corrupted during download from the internet or cloud storage services.
Storage Drive Recovery
Recover PDFs copied off older drives where partial data corruption has occurred.
Frequently Asked Questions
Everything you need to know about Repair PDF
Not every corruption is recoverable. If the core content data is missing, recovery is impossible. However, it successfully repairs many common structural issues.
No. The tool only fixes the document structure. The actual text, images, and layout are preserved as-is from the original.
If you have the password, you can try. Combine with our Unlock PDF tool after repairing if needed.
No. The file is processed entirely in your browser. It never leaves your device.
If client-side repair fails, the corruption may be too severe. Try specialized desktop recovery tools like PDF Recovery Toolbox or contact the original document source for a fresh copy.
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