JuliusBajaj unlike others bbcode editor you click on add image and it shows something like this.. [img][/img]
There's no button for it at this time (there an issue in Github about this omission), but you can use either BBCode or Markdown depending on what you have enabled on your site:
[img]https://image.goes/here.jpg[/img]
You can also use the extensions that others have posted, but those are more for uploading images. If you're simply trying to link/embed them in your post, you can use the codes above. And hopefully the issue will be resolved soon so there will be a button.
