Choose your tool
No tools match your search.
YAML Formatter & Validator
Parse and reformat YAML. Comments are preserved.
Your results will appear here.
Three steps. That’s it.
A useful toolkit for text, data, images and calculations.
- 01
Add your input
Choose a tool, enter values or select a file.
- 02
Make it yours
Adjust the options and run the action.
- 03
Take the result
Copy the result or download its file.
YAML pretty printer online
Review a YAML configuration with consistent formatting. Syntactically valid YAML can still violate an application's configuration schema.
How to use it
Enter the source input or select Try example. Review the displayed input. Select Run tool and inspect the result before copying or downloading.
Worked examples
Review a YAML configuration with consistent formatting.
Worked example — YAML Formatter & Validator
Settings: No additional options
Input:
name: Kirikuba active: true tools: [text, data]
Output:
name: Kirikuba active: true tools: [ text, data ]
The example output has 3 lines. Compare its order, separators and whitespace with the input before copying the result.
Limitations and common mistakes
- Syntactically valid YAML can still violate an application's configuration schema.
Frequently asked questions
How can I reformat YAML online?
Enter the source input or select Try example. Review the displayed input. Select Run tool and inspect the result before copying or downloading.
Where is my input processed?
The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.
Useful next tools
Explore other tools
Open a tool below, use the search, or choose a category to browse its full collection.
- JSON Formatter and Validator
Validate JSON syntax, format with two or four spaces, or minify it for copying and downloading. Works with pasted JSON in your browser.
- SQL IN List Builder
Convert a list of lines into a SQL IN (...) fragment. Quote text safely for the fragment, preserve leading zeros or select numeric values.
- CSV to JSON and JSON to CSV Converter
Convert CSV tables to JSON arrays or JSON arrays of objects to CSV. Supports comma, semicolon and tab delimiters, quotes and multiline cells.
- Unix Timestamp Converter
Convert Unix seconds or milliseconds to ISO dates and readable time zones. Convert ISO dates back to Unix timestamps.
- UUID v4 Generator
Generate one or up to 1000 random UUID v4 identifiers in your browser. Copy the list or download the values as a text file.
- URL Encoder and Decoder
Encode or decode URL text. Choose component mode for parameter values or full URL mode to preserve URL separators.