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1440×2560
shown at 9%
Reels Video (9:16)
Video
- Size (px)
- Ratio
- 9:16
TikTok — Spark Ad (boosted organic post)
Video · Social · Verified 2026-06
Live preview
1080×1920
shown at 24%
In context
Sample feed post
Full specification
Size (px)
Ratio9:16
Max weightInherits organic post limits
Max durationNo restrictions (inherits organic video)
Max videoInherits organic post limits
Formats · VideoMP4, MOV
Text limits Caption inherited from the organic post; max 4 lines displayed including emojis
Notes & best practice
Spark Ads promote an existing organic TikTok post.
The creative inherits the original video's format, duration, and caption.
Formats must be .mp4 or .mov with no duration restriction.
Dimensions follow native organic 9:16.
Captions have a 4-line display limit.
Frequently asked questions
What size is the TikTok Spark Ad (boosted organic post)?
The TikTok Spark Ad (boosted organic post) is 1080×1920 px, aspect ratio 9:16.
What is the aspect ratio of the TikTok Spark Ad (boosted organic post)?
9:16. At the recommended resolution that is 1080×1920 px.
What is the maximum file size for the TikTok Spark Ad (boosted organic post)?
Up to Inherits organic post limits, in .
How long can the TikTok Spark Ad (boosted organic post) be?
No restrictions (inherits organic video).
Why does TikTok crop my Spark Ad (boosted organic post)?
TikTok shows Spark Ad (boosted organic post) at 9:16. Upload exactly 1080×1920 px and keep key content in the safe area so nothing gets cut off.
Is 1080×1920 still correct for the TikTok Spark Ad (boosted organic post) in 2026?
Yes. Last verified 2026-06 against the official TikTok documentation.
Check your creative
Test a file against this exact spec before you upload it anywhere.
Nothing is uploaded or saved — the check runs entirely in your browser.