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Prompt Template Builder

Fill in {{placeholder}} variables in a prompt template to generate the final prompt text — instantly, in your browser.

Runs in your browser Private & secure
Read the guide →

Fill a prompt template’s {{placeholders}} from a list of values. It runs in your browser and nothing is stored.

Runs in your browser

How to use it

  1. Write the template with placeholders in double curly braces, such as {{topic}}.
  2. List the values, one name=value per line.
  3. Copy or download the filled prompt.

Example

The template Summarise {{topic}} for a {{audience}} in {{words}} words. with topic=solar panels, audience=beginner and words=100 becomes “Summarise solar panels for a beginner in 100 words.”

Good to know

Placeholder names can contain letters, digits and underscores. A placeholder with no value is left as written so you can spot it. Only the first equals sign on a line separates the name from the value, so values may contain equals signs. The tool fills in text only: it does not store templates, offer a prompt library or send anything to a model. Keep private data out of templates you share, and check the token count with the Token Counter.

See the guide.

FAQs

Can I reuse the same placeholder several times?

Yes. Every occurrence is replaced with the same value.