Repair a corrupted PNG image (.png)
A PNG is a signature followed by chunks, each with its own checksum (CRC). Strict viewers refuse the whole image if one checksum is wrong, and a cut-off PNG loses only the bottom rows.
What our repair does
- Restore a damaged PNG signature
- Correct wrong chunk checksums
- Re-pack surviving rows of cut-off images into a valid file
- Skip corrupted chunks and add a missing end marker
The check and preview are free. The repaired file costs $4.99.
Drop your file here
Or from your device.
Free check, up to 50 MB. No account needed.
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Common Photos, Preview, browsers errors
Not a PNG file: incorrect file signature
The first 8 bytes, which identify a PNG, are damaged — the rest of the image is often fine. How to fix it
libpng error: IDAT: CRC error
A chunk's checksum does not match its data. Often the pixels are fine and only the checksum is wrong. How to fix it