300×1050 Ad Size: Portrait
The 300×1050 portrait ad is a very tall sidebar format used for premium brand campaigns. It is less common, but it stands out next to long articles.
Specs
| Spec | Value |
|---|---|
| Name | Portrait |
| Dimensions | 300 × 1050 pixels |
| Aspect ratio | 2:7 |
| Devices | Desktop |
| High-resolution version | 600 × 2100 pixels (2×), scaled down |
| Typical file size | Keep images under 150 KB. Google Ads limits uploaded image ads to 150 KB. |
| Formats | JPG, PNG, GIF or HTML5 |
Where to place a 300×1050 ad
- Sidebar next to long articles
Pros and cons
| Pros | Cons |
|---|---|
| ✓ Very high impact ✓ Can accept 300×600 and 300×250 in the same slot | ✗ Low demand compared with 300×600 ✗ Needs a long page to make sense |
Tips for 300×1050 ads
- Only use it as part of a multi-size slot with 300×600 and 300×250.
- Reserve the slot’s height in your layout so the page doesn’t jump when the ad loads. See Core Web Vitals and ads.
Related ad sizes
Frequently asked questions
What is a portrait ad?
The IAB name for the 300×1050 display ad, a tall sidebar unit.
Is 300×1050 worth it?
It can earn well from brand campaigns, but on its own it fills less often. Combine it with smaller sizes.
Want to know what this slot could earn? Try the ad revenue calculator, or look up terms in the ad tech glossary.