YAML ⇄ JSON Converter — Free Online Tool

Convert YAML to JSON or JSON to YAML Instantly

Whether you're working with config files, frontmatter, static site data, or API payloads — ToolMateX's YAML ⇄ JSON Converter helps you convert formats in real time. No installs. No accounts. No delay.

Bi-Directional Smart Conversion

You don't need two tools for converting YAML and JSON — just one. ToolMateX intelligently watches your input and converts the opposite side. Change YAML? You get updated JSON. Edit the JSON? The YAML responds. Simple.

Customizable JSON Output

• ✅ Choose tab or space indentation
• ✅ Customize the number of spaces (1–10)
• ✅ Copy button to export your JSON quickly

This gives you full control over how your output looks, whether you're pasting it into a README, pushing to GitHub, or feeding it into another tool.

Use Cases

• 🧩 Convert frontmatter from Markdown files
• 📦 Work with YAML or JSON-based API configurations
• 🧑‍🏫 Practice syntax and structure in both formats
• 💡 Transform CMS config files and static site settings
• 🔄 Migrate between JSON-based and YAML-based projects

Why Choose ToolMateX?

ToolMateX tools are designed for speed, clarity, and privacy. You don’t have to sign up, deal with ads, or risk uploading sensitive configs to a third-party service. Everything works locally, in real-time.

• 🚀 Fast, responsive interface
• 🔐 Fully client-side and private
• 📄 Clean and readable formatting
• 🆓 Free to use with no limits
• 🧠 Built by developers, for developers

How to Use

1. Paste YAML or JSON into the respective field
2. Adjust JSON indentation settings as needed
3. Copy your converted output with a click
4. Continue editing in either direction — conversion is automatic