What repair actually does
The tool tries three things, in order:
- Open the file normally and write it back out with a fresh structure.
- Open it again while skipping objects that will not parse.
- Ask the same recovery engine used for password tools to rebuild the file, then save whatever still opens.
How to read the result
- Rebuilt successfully means the file parsed. Download it and check the pages.
- Partially recovered means damaged objects were skipped. Pages or content may be missing. That is not a full repair, and the download name says so.
- An error means this file cannot be recovered here. Some corruption is unrecoverable.
A password-protected PDF is not "damaged." Unlock it with Remove Password if you know the password.
How to repair a PDF
- Open Repair PDF.
- Upload the file.
- Click Repair PDF and read the result line before you trust the download.
Privacy
The file is processed on your device. It is not uploaded for someone else to repair.