DeveloperLocal processing
YAML Formatter
Beautify YAML and JSON conversion for configs
Input
Output
name: Universal Toolbox
version: 1
features:
- local processing
- free to use
settings:
theme: light
lang: zh
About This Tool
YAML Formatter is a free online tool. Format, validate YAML and convert to/from JSON All processing runs locally in your browser — files are never uploaded to any server, keeping your data private.
Use Cases
- Format JSON, YAML, TOML, SQL, and XML for API debugging
- Encoding, hashing, JWT decode, AES crypto, and security tasks
- Regex, JSONPath, IP, Cron, and other developer utilities
- Run locally — configs and secrets never leave your device
How to Use
- Step 1
Paste YAML or JSON
- Step 2
Choose format or convert mode
- Step 3
View result
- Step 4
Copy with one click
Frequently Asked Questions
- Is YAML Formatter free?
- Yes, completely free with no registration required and no usage limits.
- Are my files uploaded to a server?
- No. YAML Formatter processes everything locally in your browser. Your data never leaves your device or gets uploaded to any server.
- Which browsers are supported?
- Chrome, Firefox, Safari, Edge, and other modern browsers. We recommend using the latest version for the best experience.
- How do I use YAML Formatter?
- 1. Paste YAML or JSON 2. Choose format or convert mode 3. View result 4. Copy with one click