TikTok caption generator

Caption options for TikTok, within the 4,000-character limit.

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TikTok caption generator

Describe what you need and the generator drafts caption options, sized to the 4,000-character limit for TikTok.

TikTok caption generator

FreeRuns on your device

Output: 5 caption options, up to 4,000 characters

Tone

The AI model (~627 MB) downloads once, after you confirm, and runs on your device. Nothing you type is uploaded.

Written by an open-source AI model (Qwen3 0.6B, Apache-2.0) in your browser. Check facts and names before you post.

How it works

  1. Describe it
    Fill in what the post is about, tone, call to action.
  2. Generate options
    Get several captions written for TikTok.
  3. Pick, edit and use
    Choose one, make it yours and paste it into TikTok.

What TikTok allows

The app accepts 4,000 characters, scheduling tools 2,200, and hashtags count toward the limit. Virlo flags 150 to 300 characters as the range where most high-performing captions land.

TikTok formats to write for

Video

Vertical 1080 x 1920; the first 3 seconds decide whether viewers stay.

Photo post

1080 x 1920 images, JPG or WebP up to 8 MB each.

Caption

4,000 characters in the app, 2,200 through scheduling tools.

Comment reply

Comments are capped at 150 characters; a reply can be a new video.

Examples for TikTok

Templates with [placeholders] to fill in with your own details.

Keyword first

The search phrase in the first line.

Short

150 to 300 characters, where most high-performing captions land.

Series

"Part [n]: [topic]" so viewers find the rest.

What makes a strong caption on TikTok

Lead with the hook inside the visible part, give the context in short lines, and close with one action: comment, save or follow.

Angles the generator offers

Hook first

The line before the cut does the work.

Short lines

Easy to read on a phone.

One clear ask

A question or an action.

Tags at the end

Hashtags never push the hook down.

Finish polishing before you publish

Your caption is ready. Now get the result.

Good copy earns the first look. Real likes, comments and saves are what grow the video.

Get real likes on your video

Frequently asked questions

What does a strong TikTok caption give?

It grows the account, but you need the right tool.

How long should a caption be?

Long enough to give context, with the hook inside the part the feed shows.

What does TikTok allow for captions?

The app accepts 4,000 characters, scheduling tools 2,200, and hashtags count toward the limit. Virlo flags 150 to 300 characters as the range where most high-performing captions land.

Is the TikTok caption limit 2,200 or 4,000?

4,000 in the app, 2,200 through scheduling tools; 2,200 works everywhere.

Is the TikTok caption generator free?

Yes. It is free to use on this page, with no sign-up.

What are TikTok photo posts?

1080 x 1920 images, JPG or WebP up to 8 MB each.

How long should a TikTok caption be?

Virlo flags 150 to 300 characters as the range where most high-performing captions land.

What size should TikTok media be?

1080 x 1920 vertical; photo posts take JPG or WebP up to 8 MB per image.

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