Advanced PDF Repair Tool

Why Do PDFs Get Corrupted?

PDF files can get damaged in a few common ways. A download that was interrupted partway through leaves an incomplete file. Copying a file from a failing hard drive, USB drive, or memory card can corrupt it. Files shared over unreliable connections sometimes lose chunks of data. Email attachments can become corrupted if the mail server has issues. Whatever the cause, a corrupted PDF will either fail to open, show blank pages, or crash your PDF viewer.

What This Repair Tool Does

This tool loads your PDF using pdf-lib, reads as many pages as it can recover, and then saves them into a new, clean PDF file. It skips over pages that are too damaged to recover and saves everything it can. In many cases, you will get back most or all of your pages.

How to Repair Your PDF

1. Click "Choose PDF File" and upload your damaged PDF.
2. Click "Repair PDF" — the tool attempts to read and rebuild the document.
3. A spinner shows while it works. Then click "Download Repaired PDF" to save the recovered file.

Realistic Expectations

Q: Will it recover everything?
A: Not always. If pages are severely damaged, they may be skipped. The tool does its best to save what it can, but complete recovery is not guaranteed.

Q: What if the PDF will not open at all?
A: Severely corrupt files that cannot be parsed at all may fail. Try to open the file first in a different PDF viewer — sometimes the file is fine, just incompatible with one particular app.

Q: Is my file sent to a server?
A: No. Everything happens in your browser using pdf-lib. Your file is not uploaded anywhere.