Peek makes it easy to create short screencasts of a screen area. It was
built for the specific use case of recording screen areas, e.g. for
easily showing UI features of your own apps or for showing a bug in bug
reports. With Peek, you simply place the Peek window over the area you
want to record and press "Record". Peek is optimized for generating
animated GIFs, but you can also directly record to WebM or MP4 if you
prefer.

Peek is not a general purpose screencast app with extended features but
rather focuses on the single task of creating small, silent screencasts
of an area of the screen for creating GIF animations or silent WebM or
MP4 videos.

Peek runs on X11 or inside a GNOME Shell Wayland session using
XWayland. Support for more Wayland desktops might be added in the
future.