Free Software that I rely on. One per day.
Day 7:
ImageMagick
This is actually a small suite of tools that can be used from the command line, although it also has a GUI interface. Pretty old school software; been around for ages; still very handy.
Not as powerful as Gimp or Krita for manipulating a single image, but with ImageMagick and a bash script you can make changes en masse ("convert" and "mogrify" -- which does the job in place). You can quickly check the format and size of images from the command line ("identify") or simply pop up the image with "display".
Finally, with "compose" you can make an image combining multiple images in many different ways, including making a grid with or without labels.
I don't use it as much as I used to, but it is still the simplest way to check image content from the command line. And it's really the only option when you need to change a whole lot of images at once.
Also often used on server back ends to manipulate images for display in web applications.
#FreeSoftwareAdvent #ImageMagick #Graphics #FreeSoftware #OpenSource
