Repair PDF
Drop a PDF that won't open and we'll rebuild its structure so it opens again. Everything runs locally.
Best-effort: we rebuild broken structure and recover intact content, but data that's physically missing can't be invented, and password-protected files must be unlocked first.
How it works
- Drop the damaged or unreadable PDF into the upload area. The file stays on your device.
- Click Repair PDF. We parse whatever is still intact and rebuild the cross-reference table and trailer.
- Review the report — it lists what was recovered and flags any pages with missing data.
- Download the repaired PDF and try opening it again.
Frequently asked questions
What kinds of damage can this fix?
Broken cross-reference tables, missing or truncated trailers, files cut off by an interrupted download, and bloated or inconsistent structure. We rebuild the file's index so viewers can open it again.
Can it recover content that is actually missing?
No. If part of the file was never downloaded or was overwritten, that data is gone — we recover everything that is still present and tell you which pages are affected.
My PDF is password-protected. Can you repair it?
Not directly. Remove the password with the Unlock tool first, then run Repair.
Is anything uploaded?
Nothing. Repair runs entirely in your browser — we never see your file.