Google YouTube Companion Banner 300x250 Ad Size
300×250px · 6:5
The recommended size for Google YouTube Companion Banner 300x250 ads is 300×250px (ratio 6:5). Accepted file format: JPG, GIF, PNG, with a maximum file size of 150KB.
Placement spec
| Recommended size | 300×250px |
|---|---|
| Aspect ratio | 6:5 |
| File format | JPG, GIF, PNG |
| Max file size | 150KB |
Design rules
- Contrasting border required for white/black/transparent backgrounds
- No fake UI elements (buttons/system alerts)
Frequently asked questions
What is the correct size for Google YouTube Companion Banner 300x250 ads?
The recommended size is 300×250px with a 6:5 aspect ratio.
What are the file format and size limits?
Accepted file format: JPG, GIF, PNG, 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 300×250px and 1,400+ other placement sizes. For placements with a safe zone, AI keeps key elements inside the safe area.