Corrupted PDFs won't open, display errors, or show blank pages. Folium's Repair PDF tool attempts to recover your damaged file by loading it in fault-tolerant mode and re-saving a clean copy — all in your browser, with no upload required. It works on many common PDF corruption scenarios.
Uses pdf-lib's tolerant parsing mode to load damaged PDFs that other tools reject.
Your corrupted file never leaves your device. Recovery runs in your browser.
The repair process runs immediately with no upload or server processing delay.
Successfully loaded pages are re-saved into a fresh, standards-compliant PDF structure.
Drop your damaged PDF or click Choose File to select it.
Click Repair PDF. The tool uses pdf-lib's fault-tolerant parser to attempt loading all recoverable content.
If repair is successful, a clean re-saved PDF downloads to your device. Heavily corrupted files may show an error.
Repair PDFs that were partially downloaded and won't open.
Fix PDFs that became corrupted after being edited by incompatible software.
Attempt recovery of PDFs from damaged storage media or old backups.
Some PDF editors create non-standard structures that confuse viewers — re-saving with pdf-lib normalises them.
The repair process uses pdf-lib running entirely in your browser. Your corrupted file is loaded from local storage, processed by the fault-tolerant parser in memory, and re-saved back to your device. No file data is ever transmitted over the internet.
Repair corrupted PDF files online for free with Folium — fault-tolerant loading, clean re-save, no upload, no account. Give your broken PDF the best chance of recovery in seconds. Free forever.