Meta
Facebook Reels Ad Specs 2026
Design at 9:16 (1080 x 1920). Below is the full spec, the practical rules for getting it right, and a free validator to check your own files.
Specs last verified July 2026
| Platform | Meta |
|---|---|
| Recommended aspect ratio | 9:16 |
| Accepted ratios | 9:16 |
| Recommended resolution | 1080 x 1920 |
| Minimum resolution | 600 x 1067 |
| File types | MP4, MOV, JPG, PNG |
| Max file size | 4 GB video / 30 MB image |
| Video length | 1 sec - 90 sec |
| Formats | Image, Video |
| Primary text | 72 recommended |
| Headline | Optional - de-emphasized in Reels |
The same 9:16 master used for Instagram Reels works here, and image ads are accepted in the placement too. It uses the same safe zone as Instagram Reels and Stories: about 14% top, 35% bottom and 6% on each side.
How to get Facebook Reels right
Design it right
Facebook Reels uses the same spec as Instagram Reels: full-screen 9:16 at 1080 x 1920, built around video, with image ads accepted. If you have already made a vertical Reels or Stories master, it works here without changes, because all four full-screen surfaces take the same 9:16 frame and the same safe zone. That shared master is the whole point of building vertical once and letting it serve every full-screen placement.
The common mistake
Treat Facebook Reels like its Instagram sibling: hook in the first second, keep captions and key visuals out of the bottom 35% and away from the right-side controls, and design for sound-off with on-screen text. Image ads are accepted, but this is a video-first placement. Keep ads to 90 seconds or less, and shorter is usually better in a fast-swiped feed. The advantage of this placement is that it costs you nothing extra when you already export a vertical cut for Stories and Instagram Reels.
Check your creative against Facebook Reels
Drop your files into the free creative validator - it reads each file's dimensions in your browser, tells you which placements it covers, and flags the aspect ratio your set is missing. For a single file, the aspect ratio checker gives a per-placement verdict.
Facebook Reels FAQ
What is the aspect ratio for Facebook Reels ads?
Is Facebook Reels the same spec as Instagram Reels?
Can I use an image for a Facebook Reels ad?
How long can a Facebook Reels ad be?
Do I need a separate file for Facebook and Instagram Reels?
Other placement specs
One concept, every ratio, one ad
Once each concept has its 4:5 and 9:16 cuts, uplads reads the placement in every filename and merges them into a single multi-placement ad - the right cut in each surface - across a whole bulk launch.