Prompt template filler
Paste a prompt with {{variables}}, fill in a field for each one and copy the finished prompt. Runs in your browser; nothing is uploaded.
Reuse a prompt without rewriting it
Most prompts you use more than once have a fixed part, the instructions, and a part that changes each time: a name, a topic, a document. Write the changing parts as {{variables}}, and this tool turns each one into a field. Fill them in, check the result and copy it.
Example
The template above asks for three details:
Write a short, friendly reply to {{customer_name}} about their {{issue}}. Promise an update within {{hours}} hours.Enter Dana, late delivery and 24, and the copied prompt reads: "Write a short, friendly reply to Dana about their late delivery. Promise an update within 24 hours."
To learn more about naming variables and adding hints, read how to use variables in AI prompt templates. To check a template for missing parts first, try the prompt checker.
Questions
What counts as a variable?
Any name in double braces, such as {{customer_name}}. Names use letters, numbers, underscores or hyphens and start with a letter or underscore. The same name used twice gets one field.
What happens to a variable I leave empty?
It stays in the copied text as {{name}}, so you can see what is missing or fill it in later in your AI assistant.
Is my prompt sent anywhere?
No. Filling in and copying happen in your browser. Only "Save to my library" sends the template, and only after you sign in.
Which AI assistants does this work with?
All of them. The result is plain text you paste into ChatGPT, Claude, Gemini or any other assistant.
Keep your prompts
Save prompts you reuse in your own library: sections, {{variables}}, folders and version history. Creating an account is free, and saving or filling in prompts needs no AI provider.
More free tools
- Prompt checker
Check a prompt for a missing role, output format, length or example, and for broken tags and variables. Runs in your browser; nothing is uploaded.
- Prompt refiner
Paste a prompt and get a clearer, more specific version, with optional questions about what you need. Free to try without an account, within daily limits, where this site offers it.
- Prompt diff
Compare two versions of a prompt word by word to see exactly what changed. Runs in your browser; nothing is uploaded.
- Prompt token counter
Estimate how many tokens a prompt uses and what it costs across current OpenAI, Anthropic and Gemini models. Runs in your browser; nothing is uploaded.