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.

The Digital Inspiration weblog has a step-by-step for adding HTML to Gmail messages. For those of you who have tried inserting an image or table in Gmail, you've probably noticed that Gmail won't ...

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.