Single image tweet ads allow advertisers to target audiences with ads that look like tweets in their feed. These ads are both desktop and mobile-friendly.
Specs & Tips:
Tweet Copy: 280 Char.
Image File Types: JPG, PNG, GIF
Image file size: Max 15mb on twitter.com and 3mb on ads.twitter.com
Mobile Image Specs: Minimum 600 X 335 px
Aspect Ratio: 16:9
Desktop Image Specs: Min: 600×600
Aspect Ratio: Any aspect 2:1 or 1:1
When using the same image across desktop and mobile, we recommend sticking to the mobile specs