The HTML Web programming language doesn't offer a specific tag for adding a caption to an image. While it has a tag, it's for adding a label to a table – not for images.

Some web pages display a small image (PNG, etc.) in the page tab title, address bar, or browser bookmarks. This image is called a favorites icon or Favicon for short. Here's a step-by-step guide on ...

You could do that using an image editor, but CSS can often get the job done faster. Learn how to add a CSS reference to an image and you can stretch it horizontally to any width you like.