Repair PDF

The Repair PDF tool tries to salvage as much as it can from a damaged or partially corrupted PDF — the kind that opens with errors, shows blank pages, or refuses to open at all.

What the tool can fix

• Truncated downloads where the file ends in the middle of a stream.
• PDFs with corrupted cross-reference tables.
• Files that show error dialogs in standard viewers but partially render.

What it cannot fix

Severely damaged PDFs — for example, a file where the header bytes are missing or the content streams are encrypted with a lost key — cannot be reconstructed. If no pages can be rendered, the tool reports the failure rather than producing a broken output.

How recovery works

Each page is rendered with a tolerant parser into a canvas, and the resulting images are stitched back into a fresh PDF. The output is image-based, so selectable text from the original is not preserved.