Prompt Template Filler
AI ToolsFill {{variables}} in AI prompt templates
FreePrivateInstant
Add a file · .txt .md .csv .json … · up to 2.00 MB
Add a file · .txt .md .csv .json … · up to 2.00 MB
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History
All history →Prompt Template Filler — at a glance
Reuse your best AI prompts by turning the changing parts into variables.
Write a {{tone}} email about {{topic}}
tone = friendly
topic = our app
Run
Write a friendly email about our app
How to use it — step by step
A template with {{placeholders}} in the top box, and values written as name = value lines in the bottom box.
1
Paste your input
Paste or type your content into the big input box.
2
Fill Template
Press the button. The result is created instantly on your device.
3
Copy the result
Check the output and press Copy to use it anywhere.
Pro tips
Small things that make the result better.
✦Use clear names like {{audience}} or {{language}}.
✦Missing variables stay as {{name}} so you can spot them.
✦Save your favourite templates in a notes app.
Quick facts
{{var}}placeholders
Missinghighlighted
Any AIChatGPT, Claude, Gemini
Freeno signup
Frequently Asked Questions
How do I write values?+
One per line as name = value. The name must match the one inside the double braces.
Can I reuse a variable many times?+
Yes. Every copy of {{name}} is replaced with the same value.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
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