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Free TikTok Caption Generator

Describe your video, pick a tone and a length, and get three TikTok captions with a hook, the right keywords and hashtags. Copy the one you like.

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How to write a TikTok caption with AI

  1. 1

    Describe your video in a few words.

  2. 2

    Pick a tone, a length and how many hashtags.

  3. 3

    Press Generate captions and get three to choose from.

  4. 4

    Copy one and paste it into TikTok when you post.

Short or long: pick per video

The same video, a week in Lisbon on a small budget, at each length.

  • ShortWhen the video speaks for itself7 days in Lisbon for $600. Worth it? 👀
  • MediumWhen you want to be found in searchHow to spend 7 days in Lisbon for $600. Where to stay, what to eat, and what to skip.
  • LongFor how-to videos people come back toHow to spend 7 days in Lisbon for $600, step by step. Stay in Alfama, buy a 24-hour transport card, and eat lunch at a tasca, not on the main square. Take tram 28 before 9 am to miss the queue. Keep one day free for Sintra. Which part do you want a closer look at?

Captions for a feed people search

Many people now search TikTok the way they search Google. Your caption helps TikTok match your video to what they type.

Say what the video is about, in search words

TikTok reads your caption to understand the video. Use the words someone would type to find it, such as "small bedroom makeover" or "easy sourdough recipe". A caption like "this took forever 😅" tells TikTok nothing.

Hook first

The feed shows about one line of your caption over the video. Make that line count: a question, a result, or a reason to watch to the end. Everything after it is for the people who tap "more" and for search.

Let the caption and the video split the work

Don't repeat the text that's already on screen. Use the caption to add something: the question, the context, or what to do next. Planning what you'll say? Try the free video script generator, and pick your tags with the TikTok hashtag generator.

Questions, answered

How does the TikTok caption generator work?

Describe your video, then pick a tone, a length and how many hashtags you want. The generator uses AI to write three captions, each with a different angle. Copy the one you like and change anything that doesn't sound like you.

How long can a TikTok caption be?

Up to 4,000 characters in the TikTok app. The feed shows only the first line or so, so put your hook first.

Do people search TikTok captions?

Yes. TikTok uses the words in your caption, along with what is said and shown in the video, to match it to searches. Plain words about your subject help people find it.

Should a TikTok caption be short or long?

It depends on the video. A short caption suits a video that speaks for itself. A longer one, full of the words people search for, suits how-to and advice videos that people look for later.

How many hashtags should I put in a TikTok caption?

Three to five that describe the video. Leave out tags like #fyp and #viral: they don't tell TikTok who your video is for.

Is the TikTok caption generator free?

Yes. It is free, with no login and no sign-up. To keep it free for everyone, each person can write up to 30 sets of captions a day.

What happens to what I type?

Your description is sent to OpenAI, whose AI writes the captions. Posttyy doesn't save your description or the captions.

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