Template Placeholder Filler
Fill template placeholders like {{name}} and {{email}} with values from a key=value list or JSON object.
About This Free Online Template Placeholder Filler
Our free online Template Placeholder Filler replaces {{placeholders}} in your template text with actual values. Enter placeholders and their values as key=value pairs (one per line) or paste a JSON object, and the tool automatically substitutes every {{key}} in your template. Supports nested placeholders and multi-line values. Perfect for mail merge templates, content generation, code snippets with variables, form letter personalization, and configuration file generation. All processing is done in your browser.
Features of Our Template Placeholder Filler
- Replace {{placeholders}} with values
- Key=value input format
- JSON object input format
- Case-sensitive placeholder matching
- Multi-line value support
- Real-time preview as you type
- 100% private — browser-only processing
How to Use the Template Placeholder Filler
Using this tool is simple and requires no signup or registration. Follow these steps:
- Paste your template with {{placeholders}} into the template area.
- Enter values as name=value (one per line) or paste JSON.
- View the filled result updating in real time.
- Copy the completed template.
Frequently Asked Questions About Template Placeholder Filler
What placeholder formats are supported?
The tool supports {{name}}, {{name with spaces}}, and multi-word placeholders. Placeholder names are case-sensitive.
Can I use JSON for values?
Yes. Toggle to JSON mode and paste a JSON object like {"name":"John","email":"john@example.com"}
Why Choose Text Toolbox?
Text Toolbox provides free, private, and instant online text tools. Unlike other text utility websites that require signup accounts or send your data to servers, all our tools process your text entirely in your browser. This means your content never leaves your device — we cannot see it, store it, or share it. Our tools are fast, lightweight, and work on any device with a modern web browser.