Satty

Open an existing image or pass a screenshot from another tool, add visual explanations and save to a file or the clipboard. Its GTK interface works well in screenshot workflows on wlroots-based desktops.

Before sharing images, also consider their metadata: ExifCleaner removes supported metadata but does not hide information visible in the picture.

When it is useful

Satty is useful for turning a screenshot into an explanation: marking the button a colleague should press, numbering steps in a support reply or pointing out a visual defect. The strongest result usually comes from showing less. Crop unrelated areas and use a small number of clear arrows or labels so that the reader knows which action or detail matters, rather than covering the image with decoration.

A practical way to get started

Begin with a saved screenshot and open it in Satty. Add a short label, an arrow and, if the explanation has several steps, numbered markers. Save a separate output image and reopen it at the size the recipient will actually see. If you later connect Satty to a screenshot command, test capture, annotation and clipboard output separately; this makes it easier to identify which part needs configuration.

What to consider before choosing

Satty annotates an input image, so screen capture belongs to another tool in a typical setup. Clipboard integration and shortcuts also need to match your Linux environment. Before sharing, inspect the final image for visible names, tabs and notifications. For sensitive text, remove the area or cover it fully with an opaque shape rather than trusting a light blur. Keep an unmodified original privately when you may need to redo the explanation.