A PDF that refuses to open, shows blank pages or throws an error is usually damaged in its internal structure rather than its content, which means it can often be rescued.
Common causes
- A download or upload that stopped part way through.
- An email system that altered the attachment.
- Software that crashed while saving.
- A file that is actually protected with a password.
Try Repair PDF
Repair PDF reads whatever it can from the damaged file and writes a fresh, well-formed copy. Structural problems such as a broken cross-reference table are often fixed completely.
If repair is not enough
- Download the file again from the original source. A truncated file is missing data no tool can invent.
- Check whether the file asks for a password; if so, use Unlock PDF with the correct password.
- If the file opens but renders oddly in some viewers, Rasterize PDF turns each page into an image, which displays the same everywhere.