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Repair PDF

Upload a PDF that won't open or shows errors. We try progressively stronger repair methods and verify that the result opens.

Choose a file or drop it here

Click to browse · PDF · up to 200 MB

Runs in your browser: your files and data never leave your device.

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What is Repair PDF?

Repair PDF rebuilds the internal structure of a damaged PDF—such as its cross-reference table and object offsets—so readers can open it again.

How to use Repair PDF

1
Choose the damaged PDF.
2
The tool tries a structural rebuild with qpdf, then a tolerant re-write.
3
If both fail, you can choose to rebuild the document from its renderable pages.

Features

Structural repair with qpdf (WebAssembly)
Tolerant parser fallback
Optional page-image recovery as a last resort
Output is verified before download

Supported formats

PDF

Maximum file size: 200 MB per file.

Practical uses

Recover a PDF that was truncated during download.
Fix files that show "damaged" or xref errors.
Make old or poorly generated PDFs readable again.

Limitations

Missing data cannot be recreated: heavily truncated files may lose pages.
The last-resort method produces image-only pages without selectable text.

Frequently asked questions

Why won't my PDF open?

Common causes are incomplete downloads, broken cross-reference tables or invalid object offsets written by faulty software.

Is the repaired file identical to the original?

Structural repairs keep all recoverable content. Only the last-resort method changes pages into images, and you must choose it explicitly.