Repair PDFFix corrupted or damaged PDF files
Fix corrupted or damaged PDF files online for free. Upload a broken PDF that will not open or displays errors, and the tool reconstructs the document structure to recover your content. Runs entirely in your browser.
Fix a Corrupted PDF File
If your PDF will not open, shows an error message, displays blank pages, or crashes your viewer - upload it here. The tool scans the raw file data, identifies the corruption, and rebuilds the document structure. Works on PDFs damaged by incomplete downloads, disk errors, email corruption, or interrupted transfers.
Repair Damaged PDF Documents Online
The repair process rebuilds broken cross-reference tables, fixes damaged page trees, and reconstructs the document catalog. It recovers text, images, and embedded fonts wherever the underlying data is still intact. The tool shows you exactly what it found and fixed in a diagnostic report.
Open a PDF That Won't Open
When a PDF refuses to open in any viewer, this tool can still read it. It works directly on the raw binary data without relying on a standard PDF parser. Even severely damaged files often have recoverable content - upload it and see what can be saved.
Repair Without Uploading Sensitive Files
Corrupted documents are often the most sensitive ones - legal filings, financial records, confidential contracts. The repair runs entirely in your browser. Your file is never sent to any server. After repairing, use Compress PDF to optimize the output size if needed.
How to Repair a Corrupted PDF
Upload the Damaged PDF
Drag and drop your corrupted file. The tool accepts PDFs that other viewers refuse to open.
Automatic Diagnosis and Repair
The tool analyzes the file structure, identifies issues, and rebuilds the document automatically.
Download the Fixed PDF
Download your repaired file and verify the recovered content.
Frequently Asked Questions
What does a corrupted PDF look like?
It might refuse to open, show blank pages, display error messages about cross-references, or crash your PDF viewer. All of these indicate structural corruption.
Can this fix a PDF that won't open at all?
Yes. The tool reads raw file data directly. It does not need your viewer to parse the file first.
What types of corruption can be repaired?
Broken cross-reference tables, damaged page trees, corrupted metadata, missing EOF markers, and broken object streams. These cover most real-world cases.
Will the repaired PDF look the same as the original?
In most cases, yes. Text, images, and pages are recovered as-is. Some metadata or bookmarks may not be recoverable if that data was destroyed.
Why does my PDF show blank pages?
Usually because page content streams are referenced incorrectly. Repair rebuilds these references so content displays again.
Is my corrupted file uploaded to a server?
No. The repair runs entirely in your browser. Your file never leaves your device.
What if the file is too damaged to repair?
Severely destroyed files where the core page content is overwritten cannot be recovered. The tool will tell you what it could and could not fix.
Can I repair a password-protected PDF?
If the file is both encrypted and corrupted, enter the password first. The tool then repairs the decrypted document structure.