Open YAML Online

View and validate YAML files.

Drop a file here

or

Your file stays on your device.

  • Preview: Excellent
  • File info: Yes
  • Search: Yes
  • Editing: Yes

About YAML files

YAML is a human-friendly data format based on indentation. Docker Compose, Kubernetes, GitHub Actions and many other tools use it for configuration.

Open Online shows YAML as a tree, highlights the source and reports errors with line numbers.

What you can do here

  • Collapsible tree view
  • Source view with syntax highlighting
  • Validation with line numbers
  • Edit and save

Privacy

The file is read by your browser and stays on your device. Open Online has no server that could receive it, and nothing is stored once you close the tab. Privacy policy

Common questions

Does it support multiple documents in one file?

Yes. Files with several documents separated by --- are shown as a list.

Can I convert YAML to JSON?

aintob.com has a YAML to JSON converter.