YAML Formatter
Format YAML with consistent indentation using js-yaml in your browser. Handles nested config, arrays, anchors, and multi-document YAML.
Reviewed May 25, 2026. Privacy model: tool input is processed in your browser and is not uploaded to BytePane servers.
Step 1
Paste valid yaml input
Add the yaml input you want to convert. The conversion runs locally in your browser.
Step 2
Review the formatted yaml
Check the generated formatted yaml for field names, formatting, escaped characters, and empty values.
Step 3
Copy and verify before production use
Copy the output, then validate it against the tool, library, spreadsheet, API, or runtime that will consume it.
Consistent YAML formatting
Use this formatter to normalize compact YAML, pasted CI snippets, Kubernetes manifests, and application config before review. It is especially helpful when indentation and nested arrays make a file hard to scan.
Frequently Asked Questions
Does this formatter validate YAML first?
Yes. It parses the YAML before formatting. Syntax errors are reported with line and column details when available.
Does it support multi-document YAML?
Yes. Multiple YAML documents are formatted and separated with --- markers.
Is this formatter private?
Yes. Formatting runs locally in the browser.