Is my YAML data sent to a server?
No. All formatting and syntax feedback occurs entirely in your browser.
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YAML Formatter
Format YAML in your browser with 2- or 4-space indentation, syntax feedback, and local processing that keeps your content on your device.
Privacy
Tool workspace
How it works
Paste YAML into the input field. The tool formats it locally in your browser and reports syntax problems.
Use cases
Format YAML configuration files for review or get syntax feedback while developing.
Privacy
Your data is parsed securely in your browser memory and disappears when the page reloads.
Limitations
Formatting preserves comments, anchors, aliases, explicit tags, block scalars, quoted scalars, and document separators. It normalizes layout, so byte-for-byte whitespace is not preserved. Extremely large files may be slow on your device.
YAML Formatter FAQ
Does it provide YAML syntax feedback?
Yes. The formatter provides syntax feedback when YAML cannot be parsed.
Is the processed YAML stored anywhere?
YAML content stays in temporary browser memory and is cleared upon refresh.
What formatting modes are supported?
You can format YAML with 2- or 4-space indentation.
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