More free conversions, where you upload. The Fylane extension does the same work inside any upload form, on its own free share every day.Add to Chrome
How to repair PDF
- Drop the PDF.
- Nothing to choose.
- Press Repair and download.
What happens to your file
The file is parsed with a reader that tolerates damage: a missing or wrong cross-reference table is rebuilt by scanning for every object, a truncated file is closed at the last complete object, and the result is written as a fresh, valid PDF. What was wrong is listed with the result.
What is truly gone stays gone — a page whose bytes were never written cannot be invented. A file that is not a PDF at all (a renamed download, an HTML error page) is refused, not "repaired" into nonsense.
Questions
Why did my PDF break?
Usually an interrupted download or email attachment (the end of the file is missing), a program that wrote a bad index, or a disk that lost a block. The first two repair well.
It still will not open — what now?
If the repair reports nothing recovered, the file was already valid and the trouble is elsewhere: a password (Unlock PDF), or a reader that cannot show a feature the file uses.
Do it once, not on every form
Fixing a file here means downloading it and going back to the form. The Fylane extension does this work inside the form instead, on the file you already have.
And it keeps the result. The next application that asks for a résumé, a cover letter and a photo fills all three from one tap, each one refitted to what that site accepts.
Your files stay in the browser, encrypted, on your machine. Nothing is uploaded to keep them and nothing is sent anywhere to fill a form.
Related tools
Do this in code
curl -X POST https://api.fylane.dev/v1/jobs \
-H "Authorization: Bearer $FYLANE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"file_id": "<file id>",
"operation": "pdf.repair",
"options": {}
}'The same operation, pdf.repair — A damaged PDF rewritten with a rebuilt cross-reference; what had to be recovered is reported. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.