If a quote is only a URL, check if URL is a supported image. If URL is a supported image, use it as embed thumbnail/image (whichever the big one is) instead of printing text.
If it is not a supported image, show error only to user.
If it also has text in addition to the URL, handle as normal.
If a quote is only a URL, check if URL is a supported image. If URL is a supported image, use it as embed thumbnail/image (whichever the big one is) instead of printing text.
If it is not a supported image, show error only to user. If it also has text in addition to the URL, handle as normal.