How are Python True/False/None converted in YAML?

Python True and False are converted to YAML boolean literals true and false. Python None is converted to YAML null.

Is my Python dict data sent to a server?

No. All processing happens 100% in your browser. Your data never leaves your computer.

Can I convert large Python dictionaries?

Yes. The tool processes files efficiently using Web Workers, which run in background threads to handle large datasets without freezing the browser UI.

Python Dict to YAML Converter — Dictionary to YAML

Python Dict to YAML Converter

Turn any Python dictionary literal into well-formatted YAML. True/False become boolean, None becomes null, and nested dicts are rendered with proper indentation — perfect for configuration files.

Use Cases

Config Export — Export Python configuration dicts as YAML files
Data Portability — Convert Python-native structures to YAML for cross-language use
Documentation — Generate YAML examples from Python dict definitions
Migration — Move from hardcoded Python configs to YAML-based configs

Example

Input (Python dict):

{
  "server": {
    "host": "localhost",
    "port": 8080,
    "debug": True,
    "ssl": False,
    "timeout": None
  },
  "database": {
    "name": "mydb",
    "pool_size": 10
  }
}

Output (YAML):

server:
  host: localhost
  port: 8080
  debug: true
  ssl: false
  timeout: null
database:
  name: mydb
  pool_size: 10