TikTok caption formatter

What the formatter does

1. Trims stray spaces at the end of lines and removes empty lines at the very start and end.
2. Protects blank lines. Apps sometimes collapse empty lines between paragraphs. The formatter puts an invisible character (U+2800) on each blank line so it counts as content and is more likely to survive.
3. Counts as you type: characters, hashtags, mentions and lines.
4. Flags problems: going over the character limit, a very long first line, or a long list of hashtags.

TikTok caption limits

TikTok currently allows captions of up to 4,000 characters, a big increase on the early limits, and it has changed the number before, so if TikTok refuses a caption that the counter says fits, TikTok’s own limit wins. Characters include spaces, line breaks, hashtags and emoji. Some emoji count as more than one character because they’re built from several Unicode code points.

TikTok doesn’t publish a fixed hashtag limit, but hashtags share the character count with the rest of the caption.

Writing captions that work

Put the hook in the first line

Only the start of a caption shows before it’s cut off with “more”. That first line should tell people why to keep watching or what they’ll learn, in the words they’d search for.

Write for search

Many people use TikTok’s search like a search engine. Captions, along with on-screen text and spoken words, help TikTok understand what a video is about. “Easy 15-minute chicken stir fry” will be found; “you NEED this 😍” won’t.

Use a few relevant hashtags

Hashtags help describe a video. Three to five specific tags usually do more than a long list of generic ones like #fyp, which TikTok has never said gives any boost. Our guide to how the TikTok algorithm works covers what TikTok has said about captions and hashtags.

Use longer captions when they add something

The 4,000-character limit means you can write a full recipe, a list of steps or a mini-story. Useful when people want to save the video and come back to the details; unnecessary for a quick joke.

Ask for the comment you want

“Which would you pick, 1 or 2?” gets more replies than “thoughts?”. Comments are something TikTok weighs, and they give you ideas for video replies.

Mentions

Tag collaborators, brands you’re working with or creators you’re responding to with @. If a video is sponsored, use TikTok’s content disclosure setting as well as any tag, because advertising rules in many countries require clear disclosure.

Captions are part of a profile that works as a whole. Pair them with a clear bio, and check how your videos land with the engagement rate calculator.

Caption templates

Three structures that work for different kinds of video. Paste one into the formatter and fill it in:

• How-to: first line says the result (“15-minute garlic noodles”), then the steps on separate lines, then one question for comments.
• Story: first line is the twist or the stakes, a blank line, two or three lines of context, then “Part 2 if you want it”.
• Product or offer: first line names the problem it solves, then the key detail, then where to get it (“link in bio”).

In each case the first line does the work, because it’s the part people see before “more”.

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