Repair PDF: Step-by-Step Guide
To use Repair PDF, open the Repair PDF tool, choose your file, click the main button and download the result. Rebuild a damaged PDF so it opens again. It is free and runs in your browser.
Repair PDF lets you rebuild a damaged PDF so it opens again. This guide explains each step, what to check and how to fix common problems.
What Is Repair PDF?
Sometimes a PDF will not open because its internal table is damaged or the download was incomplete. This tool reads whatever it can and writes a fresh PDF. It cannot bring back data that is missing from the file.
How to Use It — Step by Step
- Open this tool and choose the damaged PDF (or drag and drop it onto the upload box).
- Click Repair PDF. The tool first tries to rebuild the file structure.
- If that is not possible, it makes a copy from the pages it can display. This copy keeps the look but not the selectable text.
- Open the new PDF and check every page.
Why Use This Tool?
- Open a PDF that stopped working after an incomplete download.
- Fix a PDF with a broken index so that it can be edited again.
- Save the readable pages of a partly damaged file.
- No sign-up, no watermark and no payment.
- Processing happens in your browser, not on a server.
Supported File Formats
Repair PDF accepts: One PDF (.pdf), damaged or not. Output: One PDF named repaired-<your file name>.pdf.
Is It Safe and Private?
The repair code runs in your browser. The file is not sent to our servers. You can keep your original file, because the tool saves a new one.
Best Practices
- Keep a copy of your original file until you have checked the result.
- Check the output carefully before you share it.
- Test with a smaller, non-confidential file first if you are unsure.
Common Problems and Fixes
Missing or destroyed data cannot be recovered. If the file is only partly downloaded, download it again.
Password-protected PDFs cannot be repaired here.
In the fallback copy, text is no longer selectable and the file can be larger.
Nothing downloads after clicking the button Check that your browser is not blocking downloads or pop-ups, then try again.
Frequently Asked Questions
Yes. Repair PDF is completely free, with no daily limit, no watermark and no account needed.
No. Open the Repair PDF tool page in your browser, choose your file and run it. There is nothing to install.
No. The processing runs in your own browser, so your file stays on your device.
Yes. It works in the browser on Android, iPhone, Windows and Mac.
It tries to read a damaged PDF and writes a new, valid one from the parts that can be read.
No. It can fix a damaged index or header, but it cannot restore data that is missing from the file.
If the structure cannot be rebuilt, the tool draws the readable pages as pictures and saves them as a new PDF. Text in this copy is not selectable.
Yes. It runs in your browser, so your PDF stays on your device.
Usually not. Download the file again from the source, then use the tool only if it still will not open.
No. It keeps the pages as they are and only rebuilds the file around them.
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See all 232 tools, the guide library or the tool page: Repair PDF.