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OneDo Hub

Repair PDF

Repair PDFs whose internal structure is damaged. Rebuilds recoverable cross-reference, object and page structure and checks the result before you download it.

Drop the damaged PDF here

One PDF · up to 200 MB

Your PDF stays on your deviceNo signup

How to use Repair PDF

  1. 1

    Choose or drop the PDF that won't open properly.

  2. 2

    We check its structure and list the problems found.

  3. 3

    Repair rebuilds the damaged structure in your browser.

  4. 4

    The repaired copy is checked again before you download it.

Privacy

Repair runs inside your browser. The damaged PDF and the repaired copy are not uploaded to our server. Only the repair engine is loaded from OneDo Hub.

Supported formats

One PDF up to 200 MB and 5,000 pages · structural repair only, pages are never turned into images

Frequently asked questions

What does Repair PDF fix?

It attempts to rebuild recoverable PDF structure such as damaged cross-reference information, object references and page structure.

Can every corrupted PDF be repaired?

No. If original bytes or important objects are missing or overwritten, some content may not be recoverable.

Will the pages become images?

No. OneDo Hub repairs the PDF structure rather than recreating every page as a screenshot.

Will repair change my document?

The tool rewrites damaged PDF structure where needed. Recoverable page content, text, images, forms and other document features are preserved wherever possible.

What happens to digital signatures?

A repaired copy is a modified file, so an existing certificate signature will no longer validate.

Are my files uploaded?

No. Repair runs in your browser.

Why might some content be missing after repair?

Repair can reconstruct damaged structure, but it cannot recreate file data that is no longer present.

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