Repair PDF Online Free
Fix damaged or corrupted PDF files that won't open. Rebuild broken document structure — all in your browser, nothing uploaded.
Drop damaged PDF here
or click to browse
Up to 20MB · No upload — processed on your device
How to Repair a Damaged PDF
- Select the PDF file that will not open or shows an error
- Click "Repair PDF" — the tool analyses and rebuilds the file structure
- Review the recovery report to see what was fixed
- Download the repaired PDF and try opening it again
What Can Usually Be Fixed
Most "PDF is damaged" errors are caused by a broken cross-reference table or object index rather than lost page content. The repair tool rebuilds that index and re-serializes every object, which resolves the vast majority of files that fail to open, show blank pages, or trigger "There was an error opening this document" messages in readers.
What Cannot Be Fixed
If the file was truncated in the middle of its page content, or if large portions of the data are missing entirely, the affected pages cannot be recreated from nothing. In that case the tool reports exactly how many pages it recovered so you know what to expect in the repaired file. Always keep a backup of the original damaged file.
Privacy & Security
The repair runs entirely in your browser. Your damaged PDF is never uploaded to any server, which matters all the more because damaged files are often sensitive documents you cannot risk sending anywhere. Files of up to 20MB are handled the same way, with no upload step at all.
Frequently Asked Questions
Is my file uploaded, and what is the maximum file size?
No upload is needed. This tool runs entirely inside your browser, so your file is never sent to a server. Files of up to 20MB are supported and processed locally on your own device.
How do I repair a damaged PDF file?
Upload your damaged PDF, click "Repair PDF", and the tool rebuilds the document structure and re-serializes the file. If recovery succeeds, download the repaired copy.
What kinds of PDF corruption can be repaired?
This tool fixes broken cross-reference tables, truncated object streams and structural errors that make a PDF fail to open. It cannot recover pages whose content has been physically deleted from the file.
Can every broken PDF be repaired?
No. If the file is too damaged, or has been truncated in the middle of its page content, recovery may not be possible. The tool tells you exactly what it could and could not recover.
Is it safe to repair my PDF here?
Nothing is uploaded at all. The repair runs entirely in your browser, so your file never leaves your computer. Files of up to 20MB are handled the same way, with no upload step.