Repair PDF
Recover data from damaged or corrupt PDFs.
How to use Repair PDF
- 01
Drop in the broken PDF
Add the file that won't open, shows an error, or displays as blank or garbled in your reader.
- 02
It rebuilds the structure
The tool parses whatever readable objects it can find and reconstructs the document's internal structure around them.
- 03
Download the recovered file
Save a rebuilt PDF that stands a much better chance of opening normally in any reader.
Tested and last verified on
About Repair PDF
Recover content from broken, truncated, or unreadable PDF files by rebuilding the document structure right in your browser.
Rescue a PDF that won't open
Few things are as frustrating as a PDF that refuses to open. A download that cut off halfway, a file that was written incorrectly by some export tool, a corrupted cross-reference table, or a document that a reader flags as damaged can all leave you staring at an error message or a blank window with important content locked inside. Repairing works by ignoring the broken bookkeeping and going straight for the readable content: it parses whatever valid objects it can find in the file and reconstructs a clean, well-formed document structure around them, so the pages become accessible again.
This is the tool to reach for when a file that used to work suddenly won't, when something you were sent won't display, or when a PDF opens but shows garbled or missing pages. Rather than giving up on the document, you get a rebuilt version that a standard reader can usually handle normally.
What repair can and can't recover
It's worth being realistic about recovery. Repairing is powerful against structural damage — the internal indexes and tables that tell a reader where everything is — because that scaffolding can be rebuilt from the surviving content. What it cannot do is invent data that is genuinely gone: if a download never finished, the missing pages simply aren't in the file to recover, and if content was overwritten, it can't be brought back. The outcome always depends on how much intact information remains, so a lightly damaged file often comes back perfectly while a severely corrupted one may return only in part.
Because the whole rebuild runs in your browser, you can attempt recovery on a confidential or irreplaceable document without uploading it to a third-party service, and there's no account or watermark involved. Your original damaged file is left as-is, so a repair attempt costs you nothing — if the result isn't complete, you still have the source to try other approaches on.
Questions
Everything runs in your browser. How we keep files private
What kinds of problems can repairing fix?
It targets structural damage — a broken cross-reference table, a truncated download, corrupted internal indexes, or a file that a reader refuses to open — by recovering the readable objects and rebuilding a valid document around them.
Can it recover a file that was only partly downloaded?
Often, yes. If enough of the file's objects survived, the tool can rebuild a working document from what's there, though pages that were never downloaded can't be conjured back.
Will repairing guarantee I get everything back?
No tool can promise full recovery from a badly damaged file. Repairing maximises what can be salvaged, but content that was genuinely lost or overwritten cannot be restored — the result depends on how much intact data remains.
Is my file uploaded to repair it?
No. The rebuild happens entirely in your browser, so even a sensitive damaged document stays on your device.