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HASHLY

Social Caption Keyword Generator

Generate caption keyword lines tailored to the platform you pick, with the character limit for that platform shown alongside.

Your input

Everything you type is processed in this browser tab. Nothing is uploaded, logged or stored.

Results

Fill in the fields and choose Run tool to see results here.

About this tool

The same post needs a different caption on LinkedIn than it does on TikTok, and not because of the character limit alone. Tone, structure and the expected call to action all shift. This generator writes caption lines shaped for the platform you choose, with your topic embedded, and shows that platform's caption limit so you know how much room you have.

How it works

Each platform has its own template set reflecting its conventions: LinkedIn templates lean analytical, Instagram templates lean save-worthy, TikTok templates lean fast and direct, Pinterest templates lean reference-like. Your topic is inserted, and an optional platform-appropriate call to action is appended. The documented caption limit for the selected platform is displayed alongside the results.

  1. 1Enter the topic of your post.
  2. 2Choose the platform you are writing for.
  3. 3Decide whether to append a call to action.
  4. 4Generate, pick a line, and rewrite it in your own voice.

Example

Input

small business bookkeeping (LinkedIn)

Output

What most teams get wrong about small business bookkeeping. Curious how others approach this.

When to use it

  • Adapting one piece of content into captions for four platforms.
  • Getting a first draft caption when the post is ready and the words are not.
  • Keeping call-to-action wording consistent across a campaign.
  • Showing a client the tonal difference between platforms.

Tips

  • Change at least half the words — the template is scaffolding.
  • One call to action per post; stacking them reduces the chance any is followed.
  • Check the final caption plus tags against the character limit before scheduling.

Limitations

These are templates, and templates sound like templates until you edit them. Hashly cannot predict which caption will perform, and the platform conventions encoded here are general practice rather than platform rules.

Frequently asked questions

Are these captions ready to publish?
Treat them as first drafts. They carry the right shape and your topic, but the voice has to be yours.
Where do the character limits come from?
They are the platforms' documented caption limits. Platforms change them occasionally, so verify if you are writing right at the edge.
Can it write longer LinkedIn posts?
No, it produces opening lines. Use the Content Topic Generator to plan the body of a longer post.