check yaml online

YAML Syntax Validator

Easily validate yaml online
yaml checker
Simple to Use

Leveraging the YAML validator is a breeze – effortlessly validate your YAML syntax data by copying and pasting or typing your YAML data and clicking 'Validate YAML.'

yaml validator online
Safe & Secure

We prioritize both safety and security in our code validation process. This entails executing the validation within SSL encryption, and the entire process takes place at the client level, assuring users that no code is stored during validation.

yaml syntax
Open Source

The Syntax validator is open-source, providing free usage without requiring sign-ups or any software installations.

YAML Validator online

yaml validator

How to verify YAML syntax?

Follow these simple steps:

  • Copy and paste YAML code into the yaml editor.
  • Press the "Validate YAML" button.

Which is a valid YAML syntax?

A valid YAML syntax follows the YAML specification and consists of key-value pairs, lists, and nested structures with proper indentation. YAML files should use spaces for indentation (not tabs) and follow the appropriate syntax rules for data types and structures.

What is key-value in YAML syntax?

In YAML syntax, a key-value pair consists of a key followed by a colon and a corresponding value. Keys are typically strings and represent identifiers or labels, while values can be scalar values (strings, numbers, booleans), lists, maps (nested key-value pairs), or other complex data structures.

Why is YAML used?

YAML is used for configuration files, data serialization, and structured data representation. It offers a human-readable and easy-to-write format that supports complex data structures, making it suitable for a wide range of applications such as configuration management, data exchange, and document markup.

Should I use YAML or JSON?

Whether to use YAML or JSON depends on factors such as readability, ease of use, and compatibility with existing systems. YAML is often preferred for human-readable configuration files and complex data structures, while JSON is more suitable for data interchange and web APIs.

How do I write a basic YAML file?

To write a basic YAML file, start by specifying key-value pairs with proper indentation. Use colons to separate keys and values, and dashes for list items if needed. YAML files can include comments and preserve the order of elements. Sample YAML file:

# Sample YAML file
  name: John Doe
  age: 30
  city: New York
    - Reading
    - Traveling
    - Cooking

What is the difference between yml and YAML?

There is no functional difference between ".yml" and ".yaml" file extensions; they both represent YAML-formatted files. The choice between ".yml" and ".yaml" is typically based on personal preference or conventions used in a particular project or organization.