MostlyPDF

Repair PDF

Rebuild a damaged or corrupted PDF so it opens again — structure is rewritten and recoverable content is preserved.

Open Repair PDF

How to use Repair PDF

  1. Upload your fileDrop your PDF onto the Repair PDF tool, or browse to select.
  2. Set your optionsChoose how you want Repair PDF to run — the options that matter, nothing more.
  3. DownloadRun the tool and download your finished file instantly.
Accepts
A damaged or unopenable PDF
Gives you
A rebuilt PDF that opens again
Where it runs
On our servers, over an encrypted connection; deleted within 24 hours
Price
Free — no sign-up, no watermark

Common questions

Is Repair PDF free?

Yes — Repair PDF is free with no sign-up, no watermark and no daily limit on this tool. Heavier operations (OCR, conversion) have a generous daily quota on the free plan and are unlimited on Pro.

How do I repair a corrupted pdf?

Open Repair PDF, drop your file, set the options, and download the result in a few seconds — processed securely, no queue and no ads.

Are my files safe?

Repair PDF needs our conversion servers, so the file is sent over an encrypted connection, used only for your task and deleted within 24 hours. The page tools (merge, split, rotate, organize, page numbers, watermark, crop, form filling, image to PDF) run entirely in your browser instead and never upload anything.

What can repair actually fix?

It rebuilds the internal structure — the index that tells a reader where each page lives. That covers most "the file is damaged and could not be repaired" errors from an interrupted download or a crashed export.

What cannot be recovered?

Content that was never written to the file. If a transfer stopped halfway, the pages that never arrived are gone; repair recovers everything that is still in the file and rebuilds a valid document around it.

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