How it works
How to use the YAML Viewer
Paste YAML
Or open a .yaml/.yml file.
Browse
Expand and collapse sections, search keys and values, copy paths.
Export
The JSON tab shows the parsed data.
Why view YAML as a tree?
Deeply nested YAML — Helm values, Kubernetes manifests, OpenAPI specs — is hard to follow by indentation alone. A collapsible tree makes the structure obvious.
Built for developers
Why developers use it
Private by design
Runs 100% in your browser. Nothing you paste is uploaded, logged or stored on a server.
Instant results
Output updates as you type, with precise error locations when something is wrong.
Works offline
Once loaded, the tool keeps working without a connection. Install it as an app if you like.
Free, no sign-up
No accounts, no limits, no watermarks.
FAQ
Frequently asked questions
Are anchors and aliases resolved?
Yes, aliases are expanded in the tree and JSON views.
Is my data uploaded anywhere?
No. Everything runs locally in your browser — nothing you paste or open is sent to a server, logged or stored. The tool keeps working offline once the page has loaded.
Keep going
Related tools
- YAML FormatterFormat and validate YAML while keeping comments
- YAML ValidatorValidate YAML with exact error locations
- YAML ParserParse YAML into a tree and JSON
- YAML to TSV ConverterConvert YAML lists to tab-separated values
- YAML to HTML Table ConverterConvert YAML lists to an HTML table
- JSON ViewerExplore JSON as a searchable tree
- JSON to YAMLConvert JSON to YAML and YAML to JSON