mogrify
modifies images in place
TLDR
Resize images in place
$ mogrify -resize [800x600] [*.jpg]
Convert formatcopy
$ mogrify -format [png] [*.jpg]
Rotate imagescopy
$ mogrify -rotate [90] [*.jpg]
Add watermarkcopy
$ mogrify -draw "text 10,10 'Copyright'" [*.jpg]
Compress qualitycopy
$ mogrify -quality [80] [*.jpg]
Strip metadatacopy
$ mogrify -strip [*.jpg]
copy
SYNOPSIS
mogrify [options] files
DESCRIPTION
mogrify modifies images in place. It's ImageMagick's batch processing tool.The tool transforms multiple images at once. Unlike convert, it overwrites originals.
PARAMETERS
FILES
Image files to modify.-resize GEOM
Resize geometry.-format FMT
Output format.-rotate DEG
Rotation degrees.-quality NUM
Compression quality.-strip
Remove metadata (EXIF, color profiles).-crop GEOM
Crop the image to the given region (e.g. `100x100+10+10`).-thumbnail GEOM
Faster resize that also strips metadata.-flip / -flop
Mirror vertically / horizontally.-trim
Trim uniform edges (e.g. whitespace borders).-path DIR
Write output files to DIR instead of overwriting.-auto-orient
Rotate by EXIF orientation so the image displays correctly.--help
Display help information.
CAVEATS
Overwrites originals. Part of ImageMagick. Backup before use.
HISTORY
mogrify is part of ImageMagick, providing in-place image transformation since 1990.