PhotoCollage
Version: 1.4.6 Web: https://github.com/adrienverge/PhotoCollage
If you have a bunch of photos that you want to stitch together into a collage, you could use venerable tools such as ImageMagick or GIMP. They can certainly do the job, but it takes time and requires you to have some image-editing chops.
If that’s not you, take a look at PhotoCollage. The app automates the process and can spit out photo collages with a single click.
It’s available in the repos of most popular distros, but the version there would be outdated. However, it doesn’t take much to install it from source if you have Python 3:
$ git clone https://github.com/adrienverge/
PhotoCollage.git
$ cd PhotoCollage
$ sudo python3 setup.py install
$ photocollage
The app has a simple interface. Click the Add Images button and select the images you want to add to your collage. And that’s it. The app processes the images and then displays a collage.
You can rearrange the images in the collage with simple drag and drop. You can also delete an image from the collage by hovering over it and pressing the X button. Similarly, you can add more images to the collage by using the Add Images button and selecting more pictures
If you don’t like the layout, hit the Regenerate button to ask the app to rearrange the images into a new layout. You can press the Regenerate button any number of times until you get a layout that you find appealing. Helpfully, the app keeps track of all layouts, so you can switch back to any of the older ones using the arrow keys next to the Regenerate button.
When you have a layout you like, hit the Save Poster button to save the image as a JPG, PNG, or WEBP.