Facebook Reels video spec cheat sheet
Facebook shares Reels UI with Instagram - same lower-third action stack - but the audience skews older and browses more on desktop, where the safe zone matters less than on a phone.
- Resolution
- 1080 x 1920px
- Aspect ratio
- 9:16
- Max length
- no single Reel length cap in the unified video publishing flow
- Max file size
- ~4 GB
- Caption limit
- 63,206 characters
- Safe zone
- ~10% from the top, ~35% from the bottom kept clear of on-screen text
Frequently asked
What aspect ratio does Facebook Reels use?
Facebook Reels is built around 9:16. Facebook shares Reels UI with Instagram - same lower-third action stack - but the audience skews older and browses more on desktop, where the safe zone matters less than on a phone.
What's the max video length on Facebook Reels?
no single Reel length cap in the unified video publishing flow. Meta announced removal of the separate Reel length restriction. Older 90-second guidance and publishing APIs may differ; check the composer or API you use. The 90-second trim preset is an editing choice.
What's the caption character limit on Facebook Reels?
Facebook Reels caps captions at 63,206 characters.
Koldflux reframes, captions and schedules for Facebook Reels automatically from one source recording - no manual spec-checking required.
Automate this in Koldflux