Ad specs / Facebook
Facebook carousel ad size
Facebook carousel cards are 1:1 at 1080 × 1080 pixels or larger, 2 to 10 cards per ad, images up to 30 MB and videos up to 4 GB.
| File type | JPG or PNG for images; MP4, MOV or GIF for video |
|---|---|
| Recommended resolution | At least 1080 × 1080 pixels |
| Aspect ratio | 1:1 |
| Number of cards | 2 to 10 |
| Maximum file size | 30 MB per image, 4 GB per video |
| Primary text | 80 characters (recommended) |
| Headline | 20 characters (recommended) |
| Description | 18 characters (recommended) |
What the other guides get wrong
The widely republished claim that “mobile users see approximately 1.75 cards” has no source on any platform page. Treat a decimal that precise, with no methodology attached, as invented.
Source: Meta Ads Guide — carousel ads on Facebook Feed. Every figure on this page is from there, as of . Platforms revise specs without notice; check the source before you build a template on it.
Related reading
Check a file against this size in the free ad size checker. Terrads composes each placement for its own frame, instead of cropping one master down to it.