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TikTok caption generator

Type your website. Our TikTok caption generator reads it and writes 3 captions about your business that carry the value, not just a tagline.

Free. One run a day without an account, 20 with a free one.

Updated

How it writes

The first line works as a hook. Then a short list or steps, written as your business, a soft ending, and no hashtags. Never an ad, never a made-up number.

Example for a coffee shop

  1. 1 · Insider list

    Here's what we see behind the counter at our Bondi coffee shop that you never do. The beans are roasted by us, so we know them from the first day. The pastries come out of our oven every morning, and the smell reaches the street before we do. The first coffee of the day is always a tasting, not just a pour. We notice when a roast tastes different from the week before, and we adjust. The best part of the day is when a regular's order is ready before they reach the counter. A pastry fresh from the oven tastes best with a black coffee, and we drink ours that way too. That's a small look at how our mornings go at Harbour Coffee. Send this to someone who likes knowing where their coffee comes from.

TikTok caption generator examples by industry

The opening lines of TikTok captions Postdom's writer wrote from real businesses' homepages, one per business type.

  • Real estate

    Here's what we see in real estate that most people buying, selling or renting never hear about.

  • Dental

    Nobody tells you that dental care for the whole family can be a lot simpler than it sounds.

  • Restaurants

    Nobody tells you how much a healthy salad depends on what happened to the produce before it reached the bowl.

  • Home services

    Nobody tells you that a slow drain is a plumbing warning, not just an annoyance.

  • Med spas

    The myth is that skin care is a secret only a few people understand, and nobody tells you how ordinary the start really is.

  • Hotels

    Our lifestyle hotels are eight different places, and here is what we see that guests usually don't.

What makes a TikTok caption work

The rules our writer follows for captions. Measured ones show the figure; the rest are house rules.

  • House rule

    Make the first line the hook

    The platform cuts the caption after a line or two. The first line has to earn the tap on "more", and it's never a question.

  • House rule

    Tell it, don't sell it

    A list or steps the reader can use, then a soft ending. A save or share invitation is fine; a hard ask isn't.

  • Comment-to-get asks: 0.51x

    Never "comment KEYWORD"

    On a post meant to reach new people, a comment-to-get ask did worse.

  • House rule

    Only true specifics

    Real steps, real amounts, real names from your website. Never a made-up client, number or result.

  • House rule

    Leave out hashtags

    Postdom's captions put the effort into the words. Add your own if you want them.

  • Long TikTok captions: 1.19x

    Carry the value

    Put the steps, numbers and story in the caption itself. TikTok captions over 300 characters were seen more in our data.

Measured figures are from 1,018 TikTok photo posts and 105 Instagram carousels (1 Oct 2026), each against its own account's median views. The rest are Postdom's house rules.

Free tikTok caption generator

  1. Type your website

    We read your homepage to learn what you do and who it's for.

  2. Get 3 captions

    Written by the same writer and rules Postdom uses for every post it makes.

  3. Get the finished posts

    Sign up free and Postdom turns them into slideshows and videos with the caption attached, ready for you to approve.

Want the whole post made for you? Postdom is an AI social media tool that turns your website into short videos, slideshows and posts in your brand, then publishes the ones you approve. Start free: 1 post a month on 2 accounts on any platform, no card. See the plans.

TikTok caption limits

What TikTok documents for a caption, and the hashtag limit it added in 2025.

2,200characters per caption (TikTok's posting API)
5hashtags per post since August 2025

All caption and hashtag limits, platform by platform

Questions

What makes a good TikTok caption?

One that carries the value: the steps, the numbers, the story. TikTok captions over 300 characters were seen 1.19x as much in our data.

Is the TikTok caption generator free?

Yes. Without an account you get one run a day and see 2 of its 3 captions in full. Sign up free to see all 3, get 20 runs a day and turn one into a video.

How long can a TikTok caption be?

TikTok's posting API documents 2,200 characters. Ours run 120 to 300 words, so they fit.

Should I put hashtags in my TikTok caption?

Postdom's captions leave them out and spend the space on words that teach. Add your own if you want them; TikTok allows up to 5.

Will it ask people to comment a keyword?

No. On posts meant to reach new people, a "comment KEYWORD" ask did 0.51x as well. Ours end on a save, a share or a takeaway.

What does Postdom do with my website?

It reads your homepage once to write the TikTok captions. It doesn't create an account or post anything. Results are kept for 7 days, so the same site gets the same TikTok captions.

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