PromptHub
Free Social Media Tool

AI Caption Generator

Scroll-stopping captions with hooks and CTAs — for Instagram, TikTok, X, LinkedIn and Facebook.

Free • No account • ~15–35 seconds

How to use the Caption Generator

From photo to post in three steps.

1

Describe the visual

Tell the AI what the post shows or the message you want to communicate. Details like a product, an event or a quote work best.
2

Pick platform and tone

Instagram rewards personality, LinkedIn rewards insight, TikTok rewards energy. Match the tone to your audience on that platform.
3

Choose your winner

Generate several variations and pick the hook that feels most like you. Add your own emojis or a question to spark comments, then post.

Caption Generator — FAQ

How many captions do I get?

You can request 3, 5, 8 or 10 variations in one run. Each uses a different hook — question, bold claim, story or list — so you can pick the best fit.

Are the captions platform-specific?

Yes. The tone, length and structure adapt to the platform you select, from LinkedIn's professional style to TikTok's punchy energy.

Can I edit the generated captions?

Definitely — and you should. Add your voice, relevant emojis and a question to boost comments. The generated caption is your starting point.

Does it add hashtags automatically?

No — use the separate Hashtag Generator for a ranked strategy to pair with your caption.