Google Ads specs
Google Display Ad Sizes: Specs, Examples and Best Sizes for 2026
If you only create one or two banner sizes, Google Display campaigns miss a lot of available inventory. Use this guide to build the right responsive assets and uploaded image sizes before you launch.
Quick answer: the sizes to create first
For most advertisers, the best starter set is 300x250, 336x280, 728x90, 300x600, 320x100, and 320x50. This covers the most useful desktop and mobile placements without forcing your team to design every possible banner format.
If you are using responsive display ads, also prepare a 1200x628 landscape image and a 1200x1200 square image so Google has enough high-quality source assets to test.
Google Display image ad sizes
| Size | Name | Best use |
|---|---|---|
| 300x250 | Medium rectangle | High-volume desktop and mobile inventory |
| 336x280 | Large rectangle | Strong desktop article and content placements |
| 728x90 | Leaderboard | Desktop header and publisher placements |
| 970x250 | Billboard | Premium desktop placements with large creative space |
| 300x600 | Half page | High-impact desktop sidebar inventory |
| 160x600 | Wide skyscraper | Desktop sidebar inventory |
| 320x100 | Large mobile banner | Mobile web placements with more vertical room |
| 320x50 | Mobile leaderboard | Compact mobile inventory |
| 250x250 | Square | Flexible placements with smaller inventory |
| 200x200 | Small square | Backup size for narrower placements |
Responsive display ad image specs
Landscape image
1200x628 / 1.91:1Required for most responsive display ad layouts
Square image
1200x1200 / 1:1Required for square placements and flexible crops
Logo
1200x1200 or 512x512 / 1:1Use a clean mark with enough padding
Landscape logo
1200x300 / 4:1Useful when the brand name must stay readable
Practical creative checklist
- Design for small placements first. If the message is readable at 320x50, it will usually survive larger placements.
- Keep one clear promise per ad. Avoid squeezing product shots, testimonials, badges and long copy into the same banner.
- Export multiple crops from the same concept. Consistent concept, different layout. Do not just resize one file and hope it works.
- Check policy and landing-page alignment. Claims, pricing and offers should match the destination page.
Build the sizes faster with AI
AdFuse AI can turn a product, offer or landing page into platform-ready ad concepts, then help you generate variations for Google Display, Meta, TikTok and other channels.
FAQs
What are the best Google Display ad sizes to create first?
Start with 300x250, 336x280, 728x90, 300x600, 320x100 and 320x50. These cover common desktop, mobile, article, header and sidebar placements.
Should I use responsive display ads or uploaded image ads?
Use responsive display ads for reach and testing speed, then add uploaded image ads for your highest-value campaigns when you need exact design control.
What image sizes do responsive display ads need?
Prepare a 1200x628 landscape image, a 1200x1200 square image, and square or landscape logos. Google can crop these into many placement variations.
What file size should Google Display ads be?
Keep uploaded display images under Google Ads limits and compress aggressively. Small, sharp files usually load faster and perform better on mobile inventory.