How to fix a corrupted pdf that refuses to open
- Step 1Try opening in a different viewer first — Sometimes a viewer-specific bug causes the error. Test in Chrome, Firefox PDF viewer, and Acrobat Reader.
- Step 2Upload the corrupted PDF — Drop the unreadable file into the repair tool.
- Step 3Run the repair — The tool analyses the file structure and attempts to rebuild it.
- Step 4Download and verify the repaired file — Open the repaired PDF and check how much content was successfully recovered.
Frequently asked questions
Will the repair recover all my pages?+
Recovery depends on the extent of corruption. Minor structural errors are usually fully recoverable; severe physical storage damage may result in partial recovery.
Why does my PDF get corrupted?+
Common causes include interrupted downloads, network drops during email attachment saving, bad sectors on storage, or incomplete exports from source software.
What if the repair tool can't recover the file?+
If the original source file (Word, Excel, etc.) is still accessible, re-export the PDF from there. For scanned documents, try re-scanning if the physical original is available.
Privacy first
All PDF processing runs locally in your browser using PDF-lib and pdf.js. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.