250×250 Ad Size: Square
The 250×250 square is a compact ad that fits small spaces in sidebars and content. It is less common than the 300×250.
Specs
| Spec | Value |
|---|---|
| Name | Square |
| Dimensions | 250 × 250 pixels |
| Aspect ratio | 1:1 |
| Devices | Desktop and mobile |
| High-resolution version | 500 × 500 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 250×250 ad
- Small sidebar spaces
- Inside content on narrow layouts
Pros and cons
| Pros | Cons |
|---|---|
| ✓ Fits tight spaces ✓ Works on mobile | ✗ Lower demand than 300×250 |
Tips for 250×250 ads
- Allow 200×200 in the same slot, or switch to 300×250 if you have the room.
- 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
Is 250×250 a good ad size?
It is fine where nothing larger fits, but 300×250 earns more in most cases.
Where does 250×250 work best?
In small sidebar spaces or narrow content areas.
Want to know what this slot could earn? Try the ad revenue calculator, or look up terms in the ad tech glossary.