Listed below, the six most popular pixel sizes for banner advertising:
- Traditional Banner – 468 x 60
- Monster Banner – 750 x 100
- Skyscraper – 125 x 600
- Showcase – averages 300 x 300
- Pop-under – 720 x 300
- Interstitial – full screen
Remember that many sites offer their own custom sizes. Be sure to ask each Publisher for a complete list of their offerings.
File Size Limits
By keeping file size to an absolute minimum, you:
- Insure your advertisement displays quickly when the page is loaded
- Prevent the “ad server” from crashing (like humans, servers can “only work so fast!”)
Guidelines for file size by creative:
- Traditional Banner – 15K
- Monster Banner – 20K
- Skyscraper – 20K
- Showcase – 25K
- Pop-under – 30K
- Interstitial – 25K
