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LINE ad sizes & safe zones

All 7 LINE ad formats (4 image, 3 video), grouped by placement category — the same specs the resizer exports.

Safe-zone values are pixels (top / bottom / left / right) at the format's native recommended resolution — keep text, logos, and CTAs out of those margins so platform UI doesn't cover them. Formats without a value have no platform-documented safe zone.

Timeline

FormatTypeAspect ratioRecommended sizeMinimum sizeMax file sizeDurationCodecSafe zone
Timeline SquareImage1:11080 × 1080 px600 × 600 px10MB———
Timeline LandscapeImage1.91:11200 × 628 px600 × 314 px10MB———
Timeline VerticalImage9:161080 × 1920 px540 × 960 px10MB——T 288 · B 288 · L 0 · R 0 px

Smart Channel

FormatTypeAspect ratioRecommended sizeMinimum sizeMax file sizeDurationCodecSafe zone
Smart ChannelImage1:1640 × 640 px—10MB———

Video

FormatTypeAspect ratioRecommended sizeMinimum sizeMax file sizeDurationCodecSafe zone
Video SquareVideo1:11080 × 1080 px600 × 600 px1GB5–600 sH.264—
Video VerticalVideo9:161080 × 1920 px540 × 960 px1GB5–600 sH.264T 288 · B 288 · L 0 · R 0 px

VOOM

FormatTypeAspect ratioRecommended sizeMinimum sizeMax file sizeDurationCodecSafe zone
VOOM VideoVideo9:161080 × 1920 px540 × 960 px1GB3–60 sH.264T 288 · B 288 · L 0 · R 0 px
All platforms in the Ad Format DirectoryAd sizes comparison view