Text input limit: 2 MB.
Output
Format and validate YAML
Validate and format YAML with consistent indentation in your browser.
How to use YAML formatter and validator
- 01Paste YAML or choose a YAML file up to 2 MB.
- 02Validate it or format the parsed data.
- 03Copy or download the result.
Frequently asked questions
Is my data uploaded?
No. The available inspection and transformation operations run in your browser.
What are the limits?
Text input is limited to 2 MB. Formatting rebuilds parsed data and may normalize comments, anchors, quoting, and whitespace.
Do I need to install anything?
No. Use a modern browser with nothing to install or sign up for.