Repair a damaged PDF

Rebuild a broken file so it opens again.

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Three workflows a generic PDF converter does not cover.

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Extraction, checking and question-answering for when converting a file is not enough.

When a viewer says a PDF is damaged, the problem is usually the cross-reference table — the index that says where each object lives — rather than the content itself. Repair rebuilds that index and rewrites the object tree, which is often enough to make a file open again everywhere.

🔒 Never used for AI training: delete a document and it is gone from the server.
⚡ No watermarks: on any tool, including the free tier.
↩ Undo: step back through your last 10 edits.

How to repair a damaged PDF

  1. 1Upload the PDF that will not open properly.
  2. 2Run Repair.
  3. 3The internal structure is rebuilt.
  4. 4Download the repaired file.

Questions people ask

Can it recover a file that is truly corrupt?

It repairs the container, not the contents. If the page data itself is missing or overwritten, no tool can invent it back — and we will not pretend otherwise.

Will my content change?

No. Repair rewrites the file structure; the pages are untouched.

Why does my PDF open here but not elsewhere?

Some viewers are stricter than others. Repairing normalises the file so strict viewers accept it.

Is it reversible?

Yes — Undo restores the file as it was.

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