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Repair PDF
Rebuild the structure of a corrupted or broken PDF. Fixes cross-reference errors and malformed streams entirely in your browser.
Structural repair, no data loss.
Fixes broken structure
Re-serialises cross-reference tables and object streams that cause "file is damaged" errors.
In-browser only
pdf-lib handles all repair locally. Your PDF is never sent to any server.
Content preserved
Only the structural wrapper is rebuilt — text, images, and pages are kept exactly as-is.
Frequently asked questions
- The repair process re-serialises your PDF, fixing structural corruption, broken cross-reference tables, and malformed object streams that cause errors in PDF readers.
- Yes. The repair only rebuilds the PDF structure — text, images, and formatting are untouched.
- No. Repair runs entirely in your browser using pdf-lib. Your file never leaves your device.
- Severely corrupted PDFs with missing page content cannot be recovered by structural repair alone. In that case, try opening the PDF in a different reader.