Can every broken PDF be repaired?

No. If the underlying page data is missing or truncated, there is nothing to recover. Repair works best when the structure is damaged but the content is still present.

Why does my PDF fail to open elsewhere?

Common causes are an interrupted download, a failed sync, or a generator that wrote an invalid file.

Will repairing change my content?

The tool rebuilds structure and keeps whatever page content it can read. Damaged pages may still be missing.

What if the file is encrypted?

Unlock it first with Unlock PDF using the correct password.

It opened but looks wrong — what now?

Try PDF/A normalisation, or re-export the document from its original source if you still have it.

Advanced PDF

Repair PDF

Rebuilds the cross reference table and object structure of a damaged PDF. Content that is genuinely missing from the file cannot be recreated.

This tool runs entirely in your browser. Your document is never uploaded.

Drop a damaged PDF

.PDF · up to 50 MB per file · single file

Files are processed in your browser and never uploaded.

How to repair a PDF

Attempt to rebuild a damaged PDF that will not open, by reconstructing its internal structure.

1Upload the file that will not open.
2Run the repair pass.
3Check whether pages are recovered in the preview.
4Download the repaired document.

Why use Repair PDF

Recovers files broken by an interrupted download or transfer.
Rebuilds cross-reference tables that readers reject.
Often makes a file usable by other PDFSolution tools again.
Repair runs locally with a WebAssembly PDF engine.

Privacy and how your file is handled

This tool runs in your browser using JavaScript and WebAssembly. The file you choose is read locally by the page and is not uploaded to PDFSolution servers.

Read more in our security overview and privacy policy.

Repair PDF — frequently asked questions

Can every broken PDF be repaired?: No. If the underlying page data is missing or truncated, there is nothing to recover. Repair works best when the structure is damaged but the content is still present.
Why does my PDF fail to open elsewhere?: Common causes are an interrupted download, a failed sync, or a generator that wrote an invalid file.
Will repairing change my content?: The tool rebuilds structure and keeps whatever page content it can read. Damaged pages may still be missing.
What if the file is encrypted?: Unlock it first with Unlock PDF using the correct password.
It opened but looks wrong — what now?: Try PDF/A normalisation, or re-export the document from its original source if you still have it.

Related PDF tools

Browse the full PDF tools directory or read our PDF guides and how-tos.