LinkedIn Caption Generator
Tell it what the post is about (a sentence is enough) choose a tone and you get five captions to pick from. Under 12 words in the first line, one idea per post, short lines with white space. Posts that ask a real question get comments, and comments are what the LinkedIn feed rewards. Edit anything, copy it, or schedule it straight to LinkedIn.
Results come from Claude, tuned per platform. Edit them: the best version is the one that sounds like you. We do not store what you type.
What makes a good LinkedIn caption
Under 12 words in the first line, one idea per post, short lines with white space. Posts that ask a real question get comments, and comments are what the LinkedIn feed rewards.
LinkedIn suggests three to five hashtags per post. They help LinkedIn categorise the post for people who follow the tag; more than five looks like spam and adds nothing.
How to get better results
- Give a specific brief: "our spring menu, launching Monday, photo of the pistachio croissant" beats "food post".
- Name the audience if it matters: "for first-time home buyers", "for dentists".
- Put must-include words (a product name, a discount code, a link) in the "anything to include" field.
- Pick the caption that sounds most like you and cut the rest. Generated captions are a starting point, not the post.
Frequently asked questions
Is the caption generator free?
Yes. Ten generations a day without an account, and unlimited inside Social by InstantDM's composer.
Which AI does it use?
Claude, with a prompt written for each platform's length and style.
Do you store what I type?
No. The brief is sent to generate the captions and is not saved.
How long should a LinkedIn caption be?
Up to 3,000 characters, but first 210 characters show before "see more".
Related free tools
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