Drop corrupted PDF here
Repairing...
Files processed locally — never uploaded
How it works
Run this tool in three short steps.
01
Upload PDF
Drop a corrupted or problematic PDF.
02
Auto-repair
Structural issues are detected and fixed.
03
Download
Get the repaired PDF.
Questions
What people ask before they use this tool.
How does PDF repair work?
The tool loads your PDF with pdf-lib.js error recovery mode, fixes common structural issues, and saves a clean copy in a direct browser workflow.
What issues can it fix?
Corrupted cross-reference tables, missing end-of-file markers, damaged page trees, and minor structural errors.
Is my PDF uploaded?
No. All processing happens in your browser during repair.
What if the PDF is too damaged?
Severely corrupted files may not be recoverable. The tool attempts best-effort repair.
Does it preserve content?
Yes. The repair process preserves all recoverable content — text, images, and metadata.
Does it work on mobile?
Yes.
Is there a file size limit?
It works well for common browser-based repair jobs. Very large files depend on your device memory and browser performance.
Can it fix password-protected PDFs?
You need the password first. Use our <a href="/unlock-pdf">Unlock PDF</a> tool, then repair.
Does it fix rendering issues?
It fixes structural issues. Font rendering problems may persist if fonts are missing from the PDF.
How does this compare to iLovePDF repair?
Both aim at common corruption cases. This tool fits a browser-first first pass when you want to try a repair without moving into a heavier PDF suite.
Can it fix scanned PDFs?
It fixes the PDF structure. Scan quality is not affected.
What format is output?
PDF — same as input.
Does it reduce file size?
Sometimes. Removing corrupted metadata can slightly reduce size.
Can I start repairing a PDF right away?
Yes. Upload the file, run the repair on the page, and download the cleaned copy from the same workflow.
Can I pay with crypto?
PDF tools are free. See all <a href="/pdf-tools">PDF Tools</a>. AI writing tools accept crypto from $9.99/month.
Related
Continue the workflow
Do more with your documents
Summarize, rewrite, or translate the text in your PDFs with AI.
Repair corrupted PDF files using pdf-lib.js in your browser. It focuses on common structural issues such as cross-reference tables and page trees, which makes it a useful first-pass recovery workflow before re-exporting, compressing, or sharing the document.
More:
All PDF Tools · Compress