About Repair PDF
If a PDF shows errors or missing pages, rebuilding it often helps. Repair PDF copies every readable page into a new, clean document and tells you honestly if a page could not be saved.
If a PDF opens with errors or missing pages, rebuilding it into a fresh file often helps. We copy each readable page into a new document. If a page is truly broken, it cannot be saved, and we will tell you. Honest warning: no tool can fix every damaged file.
How to use Repair PDF
- Choose your damaged PDF.
- Press Repair PDF.
- Download the rebuilt file and open it to check.
When to use Repair PDF
- Open a file that reports an error in your PDF reader.
- Recover readable pages from a download that was interrupted.
- Fix a file that other PDF tools refuse to process.
- Rescue the good pages from a partly damaged document.
Tips for better results
- Always keep the damaged original, because repair creates a new file.
- Open the new file and scroll through it to make sure the pages you need are there.
- If it cannot be rescued, try downloading or exporting the original again.
Why use 40PDF for this?
Repair is done on your device, so a damaged file that may contain private content is not handed to anyone to fix.
Repair PDF: questions and answers
Will it always work?
No. It helps with structural problems. If the data inside is gone, it cannot be recovered.
Is my file safe?
Yes. It is processed in your browser and never uploaded.
How do I fix a corrupted PDF?
Open Repair PDF, add the file and press Repair PDF. The tool rebuilds the pages it can read into a new file.
Will repair always work?
No. No tool can fix every damaged file. If a page is truly broken it cannot be saved, and the tool will tell you.
Can it recover a PDF that asks for a password?
No. It cannot open password-protected files. It is meant for files that are damaged.