Repair PDF
Fix corrupted or damaged PDF files by re-exporting through LibreOffice to normalize headers and streams.
Files are processed securely and deleted within 1 hour. We never store or share your files.
How to repair a corrupted PDF
- Upload your corrupted or damaged PDF by clicking or dragging it into the upload area.
- LibreOffice reads the damaged file and re-writes the entire PDF structure from scratch.
- The repaired file is rebuilt with clean headers, cross-reference tables, and object streams.
- Download the repaired PDF — the file should now open correctly in any PDF viewer.
Why use Formfy's PDF repair tool?
PDF corruption typically happens when a file transfer is interrupted, a disk write fails mid-save, or an application crashes while generating the document. The result is a PDF with a malformed cross-reference table or broken object streams that causes Adobe Acrobat, Preview, and Chrome to refuse to open the file.
By routing the file through LibreOffice — a battle-tested open-source office suite — Formfy's repair tool forces a clean re-export of the PDF's internal structure. Text, images, and formatting are preserved while the broken file metadata is rebuilt from scratch. Files are deleted from our servers within 1 hour.
Frequently Asked Questions
How does PDF repair work?
Your PDF is re-exported through LibreOffice, which reads and re-writes the file structure. This fixes corrupt headers, malformed cross-reference tables, and broken object streams.
What types of damage can be repaired?
Corrupt headers, broken cross-reference tables, incomplete object streams, and minor encoding issues. Severely damaged or encrypted files may not be repairable.
Will the repair change my PDF's content?
The text and images should remain intact. Layout and formatting are preserved as LibreOffice re-exports the document.
Is my file uploaded?
Yes, repair requires server-side processing. Files are deleted within 1 hour.
What if my PDF can't be repaired?
If the damage is too severe, you'll see an error message. Try the PDF Editor to manually recreate the affected sections.