Repair PDF — Fix Corrupted & Damaged Files
Repair corrupted, damaged, or broken PDF files and recover as much content as possible. Two independent repair engines rebuild your document in the browser, so it can be opened again in any reader. Batch-repair up to 10 files at once.
Key Features
Dual Repair Engines
Two independent engines rebuild your PDF, maximizing the chance of recovering damaged documents.
Batch Repair
Repair up to 10 PDFs at once and download them individually or as a single ZIP archive.
Content Recovery
Rebuilds broken cross-reference tables, damaged objects, bad headers, and trailing garbage.
100% Private
All processing happens locally in your browser. Your files are never uploaded to any server.
No Install, Free
Works on any device with a browser. No sign-up, no watermarks, and completely free.
What Is PDF Repair?
PDF files can become corrupted in many ways: an interrupted download, a failed save, a crash of the application that created them, or a damaged storage drive. Common symptoms include error messages when opening, missing pages, or a file that simply refuses to open. PDF repair attempts to rebuild the internal structure of the document — the cross-reference table that points to every object, the page tree, and the object streams — so that a compliant reader can open it again. This tool runs two independent repair engines entirely in your browser and gives you the best recovered result, keeping your pages and content as intact as possible.
How to Repair a PDF
Repairing a PDF takes just a few steps. Everything runs in your browser.
Upload the damaged PDFs
Drag and drop up to 10 corrupted PDF files, or click the upload area to select them.
Files repair automatically
Your files are repaired automatically as soon as you add them — no button needed. Each file is rebuilt by two independent repair engines, and the best result is kept.
Check the results
Files that could be recovered appear below the dropzone marked as Done. Files that are too damaged show an error message.
Download the repaired PDFs
Download a single repaired PDF, or download all recovered files as one ZIP archive.
Good to Know
Not every corrupted PDF can be fully recovered — severely damaged or truncated files may lose some pages or be unrepairable. Repair rebuilds the document structure; content that was already lost in the original file cannot be recreated. Password-protected PDFs must be unlocked before they can be repaired. Repairing a PDF may change its internal structure but keeps the visible content as intact as possible.