pamfix
Fix errors in PAM, PBM, PGM, and PPM files. tldr-pages
On several platforms
Several platforms
Fix a Netpbm file that is missing its last part
pamfix -truncate path/to/corrupted.ext >path/to/output.extIdentifyFix a Netpbm file where pixel values exceed the image's maxval by lowering the offending pixels' values
pamfix -clip path/to/corrupted.ext >path/to/output.extIdentifyFix a Netpbm file where pixel values exceed the image's maxval by increasing it
pamfix -changemaxval path/to/corrupted.pam >path/to/output.pamIdentify