Config Template Variable Replacer

Summary

Paste a config template with {{variable}} placeholders, fill in the values, and download or copy the completed config.

How it works

1. Paste your config template (YAML, TOML, .env, JSON, nginx, etc.) into the left panel.
2. The tool automatically detects all {{variable}} placeholders in your template.
3. Fill in the value for each detected variable in the form that appears.
4. The right panel updates live with the fully substituted config output.
5. Copy the result to clipboard or download it as a file.

Use cases

• Generate environment-specific config files from a shared team template.
• Fill in deployment configs (nginx, Docker Compose, Kubernetes) before ship.
• Substitute secrets into .env templates without committing real values to git.
• Quickly produce per-client config files from a single parameterized template.
• Onboard new developers by sharing a template they fill in locally.
• Automate repetitive config edits during local development setup.

Frequently Asked Questions