Google Large mobile banner Ad Size
320×100px · 16:5
The recommended size for Google Large mobile banner ads is 320×100px (ratio 16:5). with a maximum file size of 150KB.
Placement spec
| Recommended size | 320×100px |
|---|---|
| Aspect ratio | 16:5 |
| Max file size | 150KB |
Design rules
- Animation length must be 30 seconds or shorter; animations must stop after 30 seconds; animated GIF ads must be slower than 5 FPS
Frequently asked questions
What is the correct size for Google Large mobile banner ads?
The recommended size is 320×100px with a 16:5 aspect ratio.
What are the file format and size limits?
with a maximum file size of 150KB.
Can I convert an existing banner to this size automatically?
Upload your original banner to ImageFactory banner resize and it is automatically converted to 320×100px and 1,400+ other placement sizes. For placements with a safe zone, AI keeps key elements inside the safe area.