Command line

Composer installs vendor/bin/image with ALTO Image. Use it to inspect the local image drivers, read image headers, or convert one image.

Commands

doctor

Display the PHP version, memory limit, installed drivers, supported formats and driver warnings:

$ vendor/bin/image doctor

Format support depends on the installed GD and ImageMagick builds. See Drivers for the selection rules and driver limits.

info

Inspect one or more image files without decoding their pixels:

$ vendor/bin/image info photo.jpg portrait.png

The command reports the format, stored dimensions, orientation, alpha channel, frame count, colour space, metadata presence, byte size and source signature. It reports whether metadata exists without printing its contents.

convert

Convert an image using the destination extension as the output format:

$ vendor/bin/image convert photo.jpg photo.webp

Pass a serialized transform as the third argument:

$ vendor/bin/image convert photo.jpg hero.webp "cover=1280x720,g:attention|sharpen"

The command reports the source, projected dimensions, selected driver, written file and any degradation. See Operations for transform syntax and Encoding for output formats.

Exit codes