Google Display Ad — 320×50 Mobile Banner Resizer

What matters

Google Display Ad — 320×50 Mobile Banner dimensions at a glance

The 320×50 Mobile Banner is the standard ad unit for mobile web and apps. At only 50px tall, it's the most constrained ad format but has massive mobile inventory.

Mobile traffic dominates the web. This format reaches the widest mobile audience on the Display Network and in apps.

At 50px tall, anything beyond a brand name and CTA becomes unreadable. Complex designs fail completely at this scale.

Best practices

Use the crop intentionally

• Maximum one short line of text and a small CTA — nothing else fits.
• Brand logo plus a single compelling offer or message.
• Test readability at actual size — 50px is extremely small.