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TikTok video size checker

TikTok's developer docs list the video limits for apps that post to TikTok: 360 to 4096 pixels on each side, MP4, WebM or MOV, 23 to 60 frames per second and up to 4 GB. TikTok doesn't publish a recommended size or aspect ratio for videos made in its own app, so this page doesn't give one. Drop in a video to check its size, format, length and file size.

Try it

Limits from TikTok's posting API docs: 360 to 4096 pixels per side, MP4, WebM or MOV, up to 4 GB, 23 to 60 FPS. This checker reads the width, height, length, file size and file type. A browser can't read frame rate, so check that in your editor. The ratio has no pass or fail because TikTok publishes no size for its app.

How it works

  1. 1

    Drop in a video. The browser reads it, and nothing is uploaded.

  2. 2

    The checker reads the width, height, length, file size and file type.

  3. 3

    It marks the 360 to 4096 pixel limits and the 4 GB file size as pass or check, flags a file that isn't MP4, WebM or MOV, and shows the length in seconds.

  4. 4

    It shows the ratio as a plain number with no pass or fail. A browser can't read frame rate, so check that in your editor.

Platform facts

FAQ

What size should a TikTok video be?
TikTok doesn't publish a recommended size for its app. Its developer docs say a video sent to TikTok must be 360 to 4096 pixels on each side.
Which file formats work?
MP4, WebM or MOV. TikTok's docs recommend MP4 with H.264.
How long can a TikTok video be?
TikTok's docs say all creators can post 3-minute videos and some can post 5 or 10 minutes.
How big can the file be?
Up to 4 GB, per TikTok's developer docs.

Optional next step

Schedule TikTok videos from your agent

Claude, Cursor, Grok Bot or any MCP client can schedule a TikTok video through UniPost. TikTok posts may stay private until app review is complete. Your first 2 accounts are free.

Connect your agentBrowse all free tools

Related tools

Also see Schedule posts from Claude

Sources