YAML Linter Toolkit

Complete YAML processing toolkit with advanced linting, formatting, validation, and conversion capabilities. Preserves comments and supports conversion to multiple formats.

Input YAML

Paste, upload, or load YAML data

Ready
Lines: 0 | Size: 0 KB

Formatted Output

Beautified YAML with preserved comments

Convert YAML

JSON

XML

TOML

Understanding YAML

YAML (YAML Ain't Markup Language) is a human-readable data serialization standard that is often used for configuration files and in applications where data is being stored or transmitted. Its clean, indented syntax makes it easy to read and write, which has led to its widespread adoption in tools like Docker, Kubernetes, and GitHub Actions.

How to Use the YAML Linter & Formatter

  1. Input YAML: Paste your YAML code into the input field, upload a file, or load it from a URL.
  2. Automatic Validation: The tool will automatically check your YAML for syntax errors as you type.
  3. View Results: If your YAML is valid, a beautified version will appear in the "Formatted Output" box. If there are errors, they will be detailed below the input box.
  4. Convert: Once your YAML is valid, you can instantly convert it to JSON, XML, or TOML.

Frequently Asked Questions (FAQ)

Why is my YAML invalid?

The most common reason for invalid YAML is incorrect indentation. YAML uses spaces, not tabs, to create its structure. Ensure that all items in a list or a nested object are indented consistently.

Is my data safe?

Yes. All processing is done in your browser. No data is sent to our servers, so your information remains private.