If you are familiar with the basic “view source” capability of web browsers, then eventually you’ve most likely come across something like this:
(ASCII Tom Baker the 4th Doctor of Doctor Who)
Obviously (and impressively) an image has been created out of multiple characters to boldly imply that you “know how to code”. If you would like to (very) easily do the same, simply venture to picascii.com. It’s a fun little site that allows you to upload an image from your desktop and quickly convert it to ASCII Text, HTML with additional settings for color, black and white, and a numeric control of the overall quality and size. Click “Generate” and you’re taken to a page that allows you to preview your creation and simply copy the generated “code” for you to paste at leisure.