Developer Advertising

Leaderboard ad size

728 × 90 364:45

Max 150.0 KB ·JPG or PNG

728 × 90

Drop an image to check it Optional. The spec is above either way. Nothing is uploaded.

Cropped in your browser · your image is never uploaded

Local · a desktop format, not a mobile one

728 × 90. It is a desktop format; it does not fit a phone screen at all, which is why the 320 × 50 mobile leaderboard exists and now carries far more impressions.

How to use the leaderboard ad size

1 Read the dimensions above. That is the whole answer if the spec is all you came for.

2 Drop your own image in to check it against the spec. Size, aspect ratio and file weight are each checked separately.

3 Turn on the safe zone to see what gets cropped or covered, then download the cropped version at the exact size.

The 8:1 ratio is the design problem: ninety pixels of height is roughly two lines of legible type, so a leaderboard has room for a logo, a short line and a button, and nothing else. Everything about the format pushes toward one clear message. The traffic story is worth knowing too: leaderboards were the dominant display format when browsing was mostly desktop, and mobile has moved most of that volume to 320 × 50 and 320 × 100. If you are building for reach rather than for a specific desktop placement, build the mobile sizes first.

Questions

What size is a leaderboard ad? −

728 × 90 pixels, under 150 KB.

Does it show on mobile? +

How much can fit in 90 pixels of height? +

What is a billboard ad? +

Which should I build first? +

Sources

IAB, new ad portfolio

Was this tool any good?

Internal signal only · I use it to find the tools worth rebuilding