How can I insert an image in a label in my course?

When adding a label, the text box of the label with the text editor options is displayed. You can insert an image in that box by clicking on Insert/edit image (the tree icon), then clicking on Find or upload an image. The process is exactly the same as the one used to upload any other file. The image can be resized and edited, again from the box Insert/edit image.
If you know it, you can also directly put the image URL.

(last update: 22.06.2018)