The Web-button/button/banner/badge is a form for sharing links to website that includes a nice bit of visual communication! They're typically 88×31 pixels, but other formats are sometimes provided or requested.

• https://anlucas.neocities.org/88x31Buttons.html
• https://cyber.dabamos.de/88x31/
• https://sh2.us/buttons/ - 80×15 badges

Here're some I've made (that I still have):

• https://www.thepcmanwebsite.com/banner_creator/88_banner_creator.shtml