YAML Formatter
Parse and re-format YAML files with proper indentation.
About YAML Formatter
YAML Formatter normalises indentation and validates structure, catching the two mistakes that break most config files: tabs instead of spaces, and inconsistent nesting.
It also shows where a document starts and ends, which matters for multi-document files used by Kubernetes and CI pipelines.
How to use YAML Formatter
- 1
Paste the YAML
Leading tabs are flagged immediately — YAML forbids them.
- 2
Choose an indent
Two spaces is the common convention; stay consistent throughout the file.
- 3
Copy the result
Review anchors and multi-line strings, which formatters sometimes reflow.
Questions about YAML Formatter
Why are tabs rejected?
The YAML specification forbids tabs for indentation because their width is ambiguous.
Does it preserve comments?
Simple comments survive; some formatters drop them, so check before committing.
YAML or JSON — which should I use?
YAML for human-edited config, JSON for machine output and APIs.
Is my config uploaded?
No, parsing is local. Still, avoid pasting files with live secrets into any web page.
Related tools
Last updated November 2026. Files are processed on FilePlume's own hardware and deleted within 60 minutes; nothing is used for training.