2026 Omnichannel Social Media Dimension Bible

Social Media Aspect Ratio Cheat Sheet

The definitive guide to video and photo dimensions for TikTok, Instagram Reels, YouTube Shorts, X, and Pinterest. Avoid black bars and algorithm compression.

TikTok9:16

For You Page (FYP) Video

1080 x 1920 px

Max Duration:10 Minutes (60s sweetspot)

Max File Size:72 MB (Android) / 287 MB (iOS)

Target Bitrate:12 - 16 Mbps (H.264)

Instagram Reels9:16

Reels & Stories

1080 x 1920 px

Max Duration:90 Seconds (Reels)

Max File Size:4 GB

Target Bitrate:10 - 15 Mbps (H.264)

Instagram Feed Post4:5

Portrait Carousel / Photo

1080 x 1350 px

Max Duration:60 Seconds (Video)

Max File Size:650 MB

Target Bitrate:8 - 12 Mbps

YouTube Shorts9:16

Vertical Shorts Feed

1080 x 1920 px

Max Duration:60 Seconds

Max File Size:256 GB (Channel limit)

Target Bitrate:15 - 20 Mbps

YouTube Video16:9

Standard Long-Form Video

1920 x 1080 / 3840 x 2160 (4K)

Max Duration:12 Hours

Max File Size:128 GB

Target Bitrate:25 - 45 Mbps (4K)

Twitter (X)16:9 or 1:1

Timeline Video / Clips

1920 x 1080 or 1200 x 1200 px

Max Duration:2m 20s (Free) / 2 Hours (Premium)

Max File Size:512 MB

Target Bitrate:6 - 10 Mbps

Pinterest2:3 (Pin) or 9:16 (Idea)

Standard Pin / Idea Pin

1000 x 1500 or 1080 x 1920 px

Max Duration:15 Minutes

Max File Size:2 GB

Target Bitrate:8 - 14 Mbps

Why Native Aspect Ratios Matter in 2026

Mobile smartphone screens are tall vertical rectangles. When you upload non-standard dimensions, social media platforms either add pillarbox black bars or automatically zoom into your frame, cutting off text and faces. Videos filmed and rendered in native 9:16 vertical (1080x1920) receive on average 240% higher reach because they seamlessly immerse the user in full-screen vertical immersion.