There are many "wrapper" packages for working with images in Go. This one is mine.
These are image tools that I wrote by and for myself tailored to the needs of personal projects. It's possible they are not the image tools you need or want.
$> ./bin/resize -h
-max int
The maximum dimension of the resized image
-profile string
An optional colour profile to apply to the resized image. Valid options are: adobergb, displayp3.
-source-uri string
A valid gocloud.dev/blob URI where images are read from. (default "file:///")
-target-uri string
A valid gocloud.dev/blob URI where images are written to. (default "file:///")
-transformation-uri transform.Transformation
Zero or more additional transform.Transformation URIs used to further modify an image after resizing (and before any additional colour profile transformations are performed).
$> ./bin/transform -h
-apply-suffix string
An optional suffix to apply to the final image filename.
-format string
An optional image format used to encode the final image.
-source-uri string
A valid gocloud.dev/blob.Bucket URI where images are read from. (default "file:///")
-target-uri string
A valid gocloud.dev/blob.Bucket URI where images are written to. (default "file:///")
-transformation-uri transform.Transformation
One or more additional transform.Transformation URIs used to further modify an image after resizing (and before any additional colour profile transformations are performed).
For example:
$> go run cmd/transform/main.go \
-transformation-uri 'resize://?max=1280' \
-transformation-uri displayp3:// \
-apply-suffix -1280 \
-format png \
/usr/local/big-fish/big-fish-014.jpg
Create a new PNG image with the Apple DisplayP3 colour profile and a maximum dimension of 1280 pixels at /usr/local/big-fish/big-fish-014-1280.png.