Repair Damaged PDF
Open and re-save a PDF that's failing with "file is damaged" errors. The tool re-parses the document with a tolerant parser, fixes broken cross-reference tables and stale object pointers, and writes a clean copy. Free, in-browser, and no signup — your file stays on your device.
Free • No signup • Secure
How to use repair damaged pdf
Open your PDF
Drag and drop your damaged PDF onto the upload area, or click to choose a file. The file stays on your device — there is no server upload.
Re-parse with tolerance
USA Sky PDF loads the PDF in slow / fault-tolerant mode — it skips invalid object references instead of crashing, walks the byte stream looking for recoverable structures, and rebuilds the document tree from what it can salvage.
Re-save with a clean cross-reference table
The tool re-writes the file with an uncompressed cross-reference table — the most compatible format. This is the same step Acrobat performs when it asks "Save as a copy to repair this file."
Download the repaired PDF
Click Download to save the repaired .pdf to your device. Open it in any reader to confirm it loads cleanly.
Why use USA Sky PDF
Your file stays on your device
Nothing is uploaded. Repair runs entirely in your browser, and the new file is saved straight to your downloads folder.
Fixes broken cross-reference tables
The most common cause of "file is damaged" warnings. We rebuild the xref table from scratch on save, which fixes the great majority of these errors in seconds.
Tolerant parsing
Skips malformed objects instead of crashing. Many PDFs reported as damaged actually contain a few corrupt objects in an otherwise healthy document — we recover the healthy part.
Free with no signup
No account, no email. There's nothing to upgrade for this tool because nothing leaves your device.
Frequently asked questions
Is repair really free?
Yes. Free with no signup and no per-conversion limit.
Does the file leave my computer?
No. Repair runs entirely in your browser. USA Sky PDF's servers never see your PDF for this tool.
What kinds of damage does this fix?
The most common ones: broken cross-reference tables (the internal index used to find objects), stale or dangling object pointers, malformed Producer/Creator metadata strings, and missing end-of-file markers. These together cause the majority of "file is damaged" warnings in Adobe Reader and Acrobat.
What if the repair fails?
If the PDF is so corrupt that it can't be loaded at all (rare — usually means the byte stream itself is truncated or scrambled), we tell you immediately with a clear error. At that point you need a deeper recovery tool: `qpdf --recover input.pdf output.pdf` from the command line, an Acrobat Pro "Save as Other → Optimized PDF" pass, or a forensic recovery service. Our tolerant parser is the same one most online repair tools use, so if we can't load it, a different web tool probably can't either.
Does this fix password protection or restrictions?
No. Passwords and viewer restrictions are intentional features, not damage. To remove a password (when you know it) or strip viewer restrictions, use the /unlock-pdf tool instead.
Does this fix content that's invisible or rendered wrong?
Not directly. If your PDF opens but pages render with missing text, missing fonts, or garbled images, that's content-stream damage rather than structural damage — we re-save the content stream as-is. Acrobat Pro has more aggressive content recovery passes; for missing-font issues specifically, embedding the right fonts at the source is the real fix.