200×200 Ad Size: Small Square
The 200×200 small square is the smallest common square ad. It fits very tight spaces but gets little demand.
Specs
| Spec | Value |
|---|---|
| Name | Small Square |
| Dimensions | 200 × 200 pixels |
| Aspect ratio | 1:1 |
| Devices | Desktop and mobile |
| High-resolution version | 400 × 400 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 200×200 ad
- Very small sidebar spaces
Pros and cons
| Pros | Cons |
|---|---|
| ✓ Fits almost anywhere | ✗ Low demand and low CPMs |
Tips for 200×200 ads
- Use it only as a fallback inside a 250×250 slot.
- 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
Should I use 200×200 ads?
Only where no bigger size fits, because demand is low.
What is the IAB name for 200×200?
Small square.
Want to know what this slot could earn? Try the ad revenue calculator, or look up terms in the ad tech glossary.

