What is the topic of this article?

In this article, I describe two simple methods for decorating both single and multiple images with an outline frame, using two open-source resources in the GNU/Linux operating environment.

The first solution uses a graphics application. The second, on the other hand, is command-line.

Adding a frame to images is very useful in excerpts of documents published on sites and blogs.

In these cases, in fact, adding a border serves to “detach” documents published as images from the base document in which they are published.