The function of this online utility is to simplify BBCode full linked from ImgBB.
For example,
[url=https://imgbb.com][img]https://i.ibb.co/aBC2deF/g.png[/img][/url]
[url=https://example.com/link-title]resource main page[/url]
will becomes
[img]https://i.ibb.co/aBC2deF/g.png[/img]
Related online utility: Convert URL to BBCode image