Meta · Facebook

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  • Image
  • Social

Meta · Facebook In-Stream Carousel ad specs

Meta · Facebook In-Stream Carousel ads run in Facebook In-Stream Video (after 15 seconds of the main video, on mobile and desktop). Meta lists JPG or PNG, ratio 1:1, at least 1080×1080 px recommended.

  • min 600×600 px
  • 1:1
  • 15 s
Test a creative

Visual

Minimum size
600 × 600 px
Aspect ratios
1:1
Orientation
square
File types
JPG, PNG
Recommended ratio
1:1

Video & audio

Max duration
15 s

Copy limits

Text
125 chars
Headline
40 chars
Description
30 chars

Notes & source

  • Carousel ads shown to people watching Facebook videos, on mobile and desktop
  • They can show up after 15 seconds of the main video
  • Up to 10 cards
  • The page lists only an image file type (JPG or PNG) but also gives video limits (up to 4 GB, up to 15 seconds)
  • Square 1:1
  • At least 1080×1080 recommended and 600×600 minimum
  • 3% aspect-ratio tolerance
  • The page states 4GB as the image maximum file size

Official source · checked not yet

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