Repair a Damaged PDF File Online
Try to recover and rebuild damaged PDF files.
Choose a PDF
Drop a file here or select one from your device.
PDF files · 50 MB per file current limit · keep your originals until you verify the resultHow structural PDF repair works
Upload a damaged or malformed PDF and PdfnMore will attempt best-effort structural recovery. The repair processor can rebuild recoverable cross-reference and object structure, then verifies that the resulting file has readable PDF pages before returning it.
Select your file
Choose the supported file from your device or drag it into the upload area.
Set the action
Choose the pages or settings needed for this tool.
Download and check
Open the result and verify it before replacing your original file.
Which damaged PDFs may be recoverable
Repair can help when a PDF still contains its page objects but has damaged indexing or structural metadata. It cannot recreate bytes, images, fonts or attachments that are actually missing or overwritten, so keep the original file.
How to verify a repaired PDF safely
Open the repaired result and inspect every important page, image, form, link and annotation before relying on it. A successful repair means the output is readable; it does not prove that every feature from a damaged source survived unchanged.
Repair is best-effort and currently targets recoverable PDF structure. Missing or overwritten content cannot be recreated, password-protected files should use Unlock PDF with the known password, and complex interactive features still require manual verification.
Frequently asked questions about Repair PDF
What kind of PDF damage can Repair PDF fix?
It can recover some files whose PDF object or cross-reference structure is damaged while the underlying page data remains present. Missing or overwritten source bytes cannot be reconstructed.
Can every corrupted PDF be repaired?
No. Repair is best-effort. PdfnMore returns an error when it cannot produce a readable recovered PDF instead of claiming that an unrecoverable file was fixed.
How should I check a repaired PDF?
Keep the original and inspect every important page, image, form, link and annotation in the downloaded copy before replacing or sharing the source.