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Prompt Template Renderer for JSON Variables and Batches

Replace literal prompt variables using one JSON object or a batch array. Find missing fields, inspect the rendered text and download it without calling a model.

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Local workspace · no model calls · nothing saved

Make it yours

Template · literal double-brace placeholders

Variables foundtopicaudiencesentences

Input modeUse Example after switching modes or formats to load matching data.Variable values · JSON object

{
  "topic": "solar energy",
  "audience": "students",
  "sentences": 3
}

Variable status and examples

topicReady 1/1Example: solar energy

audienceReady 1/1Example: students

sentencesReady 1/1Example: 3

Supports {{name}} and {{user.name}}. Missing or null values stop rendering. No code, expressions or model calls run; inserted values remain plain text.

Your output

rendered-prompt.txt

1 prompt(s) rendered locally

Summarize solar energy for students. Use 3 sentences.

Getting started

Write a template, provide one JSON object or a batch array and copy or download the rendered text.

Before you use the result

Only literal placeholders are supported. No expressions, sections, conditionals, model calls or recursive interpolation are evaluated.

Try an example

Render “Summarize {{topic}} for {{audience}}” for two JSON rows.

How it works

Own-property paths resolve supplied values; missing values and prototype paths are rejected. Replacements are inserted literally once.

Frequently asked questions

Fill explicit {{variables}} in prompts, including nested fields and JSON-array batches.

How do I use Prompt Template Renderer?