Repair a Corrupted PDF
Fix a PDF that won't open or looks broken in other apps.
How it works
1. Upload the damaged PDF. 2. We rebuild its internal structure. 3. Download the repaired file.
What kinds of problems can this fix?
Common structural issues — a broken cross-reference table, a truncated or malformed file, or other internal corruption that stops a PDF from opening cleanly. It can't recover pages or content that's genuinely missing from the file.
What if the file can't be repaired?
You'll see an error rather than a file that still doesn't actually open — some damage is too severe to fix.
Why did my PDF get corrupted in the first place?
Usually it's not something you did. The most common causes are a download or file transfer that got cut off partway through, a cloud sync (Google Drive, OneDrive, WhatsApp) that didn't finish writing the file, or whatever program created it crashing before it finished saving. Any of those can leave the file's internal structure incomplete even though most of the actual content is still in there.
Is a PDF that asks for a password the same problem?
No — that's a different thing. A password-protected PDF is intact; it's just locked, not broken. This tool fixes internal structure, not passwords, so running a locked file through it won't get you anywhere. Use Unlock a PDF instead.
Does repairing change how the PDF looks or what's in it?
No. It only touches the file's internal structure — things like the cross-reference table that tells a reader where each page and object lives — not the actual content. Text, images, and layout come through as they were; nothing gets recompressed, rasterized, or flattened in the process.
What can I try if the repair doesn't work?
A few things worth trying before giving up on the file: open it in a different PDF reader in case the problem is the viewer rather than the file, go back to wherever you got it and download or export it again — the copy you have may be the one that got cut off — or ask whoever sent it for a fresh copy. If none of that helps, the damage is likely too deep for any tool, ours included, to reconstruct.