Use YAML Formatter
- Enter or configure the source values.
- Choose the relevant mode and run the action.
- Review the result before copying or downloading it.
YAML Formatter and Validator
Validate and format YAML 1.2 locally with comment-aware parsing, alias limits, and no custom code execution.
Inputs and results stay in browser memory in this tab. Nothing is uploaded, logged, saved, or added to the URL. A bounded YAML 1.2 document is parsed with safe built-in schemas and alias limits.
Enter text and choose an action.
Use a mature YAML parser for mappings, sequences, comments, anchors, aliases, and understandable errors.
How OpenFileTools processes it
Local processing, explicit choices.
OpenFileTools performs this developer transformation locally in the browser after an explicit action.
Questions, answered.
Is any input uploaded?
No. Input and results stay in memory in the current browser tab.
What should I verify?
Formatting can normalize scalar style and representation even when meaning is preserved.