IAB Standard Medium Rectangle Ad Size
300×250px · 300:250
The recommended size for IAB Standard Medium Rectangle ads is 300×250px (ratio 300:250). Accepted file format: JPG, PNG, GIF, with a maximum file size of 150KB.
Placement spec
| Recommended size | 300×250px |
|---|---|
| Aspect ratio | 300:250 |
| File format | JPG, PNG, GIF |
| Max file size | 150KB |
Frequently asked questions
What is the correct size for IAB Standard Medium Rectangle ads?
The recommended size is 300×250px with a 300:250 aspect ratio.
What are the file format and size limits?
Accepted file format: JPG, PNG, GIF, 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.