// PLATFORM SPECS LIBRARY

Platform Specs Library — Every Video, Image, and Caption Limit (2026)

Looking for the exact specs for your platform? Every video dimension, length cap, file size limit, and caption character limit across 25 platforms — verified 2026-05-22.

Every social platform has its own quirks — different aspect ratios, different length caps, different caption truncation points. This library has a dedicated page for each spec on each platform, with the exact value, why it matters, and a cross-platform comparison table so you can plan a single render that satisfies every destination.

80 spec lookups shipped · 23 platforms covered · last verified 2026-05-22

TikTok

video-short · 5 specs covered

Video dimensions

TikTok video dimensions: 1080×1920 (9:16 aspect ratio).

Max video length

TikTok max video length: 10 min. Best-performing range: 21s–34s.

TikTok aspect ratio: 9:16 native (also supports 9:16, 1:1, 16:9).

TikTok max file size: 287 MB per single upload.

Caption character limit

TikTok caption character limit: 2,200 characters per post.

Instagram Reels

video-short · 5 specs covered

Video dimensions

Instagram Reels video dimensions: 1080×1920 (9:16 aspect ratio).

Max video length

Instagram Reels max video length: 3 min. Best-performing range: 15s–1 min.

Instagram Reels aspect ratio: 9:16 native (also supports 9:16).

Instagram Reels max file size: 3.9 GB per single upload.

Caption character limit

Instagram Reels caption character limit: 2,200 characters per post.

YouTube

video-long · 5 specs covered

Video dimensions

YouTube video dimensions: 1920×1080 (16:9 aspect ratio).

Max video length

YouTube max video length: 12 h. Best-performing range: 8 min–20 min.

YouTube aspect ratio: 16:9 native (also supports 16:9, 4:3).

YouTube max file size: 256 GB per single upload.

Caption character limit

YouTube caption character limit: 5,000 characters per post.

YouTube Shorts

video-short · 5 specs covered

Video dimensions

YouTube Shorts video dimensions: 1080×1920 (9:16 aspect ratio).

Max video length

YouTube Shorts max video length: 3 min. Best-performing range: 15s–1 min.

YouTube Shorts aspect ratio: 9:16 native (also supports 9:16).

YouTube Shorts max file size: 250 GB per single upload.

Caption character limit

YouTube Shorts caption character limit: 100 characters per post.

LinkedIn

social-text · 5 specs covered

Video dimensions

LinkedIn video dimensions: 1080×1080 (1:1 aspect ratio).

Max video length

LinkedIn max video length: 10 min. Best-performing range: 30s–3 min.

LinkedIn aspect ratio: 1:1 native (also supports 1:1, 16:9, 4:5, 9:16).

LinkedIn max file size: 5 GB per single upload.

Caption character limit

LinkedIn caption character limit: 3,000 characters per post.

Instagram Feed

social-mixed · 4 specs covered

Video dimensions

Instagram Feed video dimensions: 1080×1080 (1:1 aspect ratio).

Max video length

Instagram Feed max video length: 1 min. Best-performing range: 15s–45s.

Instagram Feed max file size: 100 MB per single upload.

Caption character limit

Instagram Feed caption character limit: 2,200 characters per post.

Instagram Stories

video-short · 4 specs covered

Video dimensions

Instagram Stories video dimensions: 1080×1920 (9:16 aspect ratio).

Max video length

Instagram Stories max video length: 1 min. Best-performing range: 7s–15s.

Instagram Stories aspect ratio: 9:16 native (also supports 9:16).

Instagram Stories max file size: 100 MB per single upload.

Facebook Feed

social-mixed · 4 specs covered

Video dimensions

Facebook Feed video dimensions: 1920×1080 (16:9 aspect ratio).

Max video length

Facebook Feed max video length: 4 h. Best-performing range: 1 min–3 min.

Facebook Feed max file size: 10 GB per single upload.

Caption character limit

Facebook Feed caption character limit: 63,206 characters per post.

Facebook Reels

video-short · 4 specs covered

Video dimensions

Facebook Reels video dimensions: 1080×1920 (9:16 aspect ratio).

Max video length

Facebook Reels max video length: 2 min. Best-performing range: 15s–1 min.

Facebook Reels max file size: 3.9 GB per single upload.

Caption character limit

Facebook Reels caption character limit: 2,200 characters per post.

X (Twitter)

social-text · 4 specs covered

Video dimensions

X (Twitter) video dimensions: 1920×1080 (16:9 aspect ratio).

Max video length

X (Twitter) max video length: 2 min. Best-performing range: 15s–2 min.

X (Twitter) max file size: 512 MB per single upload.

Caption character limit

X (Twitter) caption character limit: 280 characters per post.

Pinterest

social-mixed · 4 specs covered

Video dimensions

Pinterest video dimensions: 1000×1500 (2:3 aspect ratio).

Max video length

Pinterest max video length: 15 min. Best-performing range: 6s–1 min.

Pinterest max file size: 2 GB per single upload.

Caption character limit

Pinterest caption character limit: 500 characters per post.

Threads

social-text · 4 specs covered

Video dimensions

Threads video dimensions: 1080×1080 (1:1 aspect ratio).

Max video length

Threads max video length: 5 min. Best-performing range: 15s–1 min.

Threads max file size: 1 GB per single upload.

Caption character limit

Threads caption character limit: 500 characters per post.

Bluesky

social-text · 3 specs covered

Video dimensions

Bluesky video dimensions: 1920×1080 (16:9 aspect ratio).

Max video length

Bluesky max video length: 1 min. Best-performing range: 10s–45s.

Caption character limit

Bluesky caption character limit: 300 characters per post.

Rumble

video-long · 3 specs covered

Video dimensions

Rumble video dimensions: 1920×1080 (16:9 aspect ratio).

Max video length

Rumble max video length: 8 h. Best-performing range: 5 min–30 min.

Rumble max file size: 15 GB per single upload.

Snapchat Spotlight

video-short · 3 specs covered

Video dimensions

Snapchat Spotlight video dimensions: 1080×1920 (9:16 aspect ratio).

Max video length

Snapchat Spotlight max video length: 3 min. Best-performing range: 10s–1 min.

Caption character limit

Snapchat Spotlight caption character limit: 160 characters per post.

LinkedIn Video (vertical)

video-short · 3 specs covered

Video dimensions

LinkedIn Video (vertical) video dimensions: 1080×1920 (9:16 aspect ratio).

Max video length

LinkedIn Video (vertical) max video length: 10 min. Best-performing range: 15s–2 min.

LinkedIn Video (vertical) max file size: 5 GB per single upload.

Vimeo

video-long · 3 specs covered

Video dimensions

Vimeo video dimensions: 1920×1080 (16:9 aspect ratio).

Max video length

Vimeo max video length: 10 h. Best-performing range: 2 min–30 min.

Vimeo max file size: 244.1 GB per single upload.

Zoom recording

live · 2 specs covered

Max video length

Zoom recording max video length: 24 h. Best-performing range: 30 min–1 h.

Zoom recording max file size: 4 GB per single upload.

Google Meet recording

live · 2 specs covered

Max video length

Google Meet recording max video length: 8 h. Best-performing range: 30 min–1 h.

Google Meet recording max file size: 4 GB per single upload.

Riverside.fm

live · 2 specs covered

Max video length

Riverside.fm max video length: 4 h. Best-performing range: 30 min–1 h.

Riverside.fm max file size: 8 GB per single upload.

StreamYard

live · 2 specs covered

Max video length

StreamYard max video length: 4 h. Best-performing range: 30 min–1.5 h.

StreamYard max file size: 8 GB per single upload.

Loom

video-long · 2 specs covered

Max video length

Loom max video length: 1 h. Best-performing range: 1 min–10 min.

Loom max file size: 4 GB per single upload.

Podcast (audio file)

audio · 2 specs covered

Max video length

Podcast (audio file) max video length: 4 h. Best-performing range: 30 min–1 h.

Caption character limit

Podcast (audio file) caption character limit: 4,000 characters per post.

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