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Standard Web Banners Sizes

Name Width / px Height / px Aspect ratio
Rectangles and Pop-Ups
Medium Rectangle 300 250 1.2
Square Pop-Up 250 250 1
Vertical Rectangle 240 400 0.6
Large Rectangle 336 280 1.2
Rectangle 180 150 1.2
3:1 Rectangle 300 100 3
Pop-Under 720 300 2.4
Banners and Buttons
Full banner 468 60 7.8
Half banner 234 60 3.9
Micro bar 88 31 2.84
Button 1 120 90 1.33
Button 2 120 60 2
Vertical banner 120 240 0.5
Square button 125 125 1
Leaderboard 728 90 8.09
Skyscrapers
Wide skyscraper 160 600 3.75
Skyscraper 120 600 5
Half page ad 300 600 2

See Actual Sizes