Although most HTML signature generators cost money, HubSpot’s signature generator is free. You can start with one of 6 templates and add your own info and images. For professional templates and more advanced features, try a paid signature generator like MySignature,or Newoldstamp, or Si. gnatu. re. If you do know HTML, compose your signature in a WYSIWYG editor like this online editor. You won’t be able to just copy the raw HTML code and paste it into Gmail—you’ll actually have to copy and paste the signature itself, which will automatically embed any images you added in the editor.

Check out Uxwing and Flaticon for thousands of free icons. When downloading an icon, save it in the PNG format for the best quality-to-size ratio and compatibility.

You may have to play around with the sizing a bit until you find one that works with your design, but start with 50 to 100 pixels per icon. Some popular online image resizers are OnlinePNG Tools and Adobe’s free resizer.

Stick to 650 px width or less. Avoid using bullet points, as they may render strangely on different email clients. Using too many (or too large) images can obscure the text.