mogrify

modifies images in place

TLDR

Resize images in place

$ mogrify -resize [800x600] [*.jpg]

Convert format

$ mogrify -format [png] [*.jpg]

Rotate images

$ mogrify -rotate [90] [*.jpg]

Add watermark

$ mogrify -draw "text 10,10 'Copyright'" [*.jpg]

Compress quality

$ mogrify -quality [80] [*.jpg]

Strip metadata

$ mogrify -strip [*.jpg]

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.

--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.