YAML Formatter & Compressor

Online YAML formatter, validator, and JSON converter

Indent

Line Width

Quote Strings

Sort Keys

Input (YAML/JSON)

Result

YAML Actions

Convert

About YAML Tool

YAML (YAML Ain't Markup Language) is a human-readable data serialization language. It is commonly used for configuration files and in applications where data is being stored or transmitted.

This tool aims to be your one-stop solution for YAML processing. Use it to beautify messy YAML files, validate configurations (like Kubernetes manifests), or convert between YAML and JSON.

YAML Beautify: Fix indentation and unify style.

YAML Validate: Real-time syntax error detection.

YAML to JSON: Convert configs to JSON objects.

JSON to YAML: Convert API responses to readable YAML.

YAML Minify: Remove whitespace and comments to save space.

Customizable: Set indent size, line width limits, etc.

Secure: Private, client-side processing only.

YAML Basics

Case sensitive

Indentation used for structure

NO Tabs allowed, MUST use spaces

# Comments

Objects use : (key: value)

Arrays use -

FAQ

Why is my YAML erroring?

Most common reason is using Tabs for indentation. YAML strictly forbids Tabs. Also ensure a space follows the colon.

Multi-document support?

This tool focuses on single-document processing. Multi-documents (separated by '---') might only process the first part.

Conversion size increase?

JSON usually shrinks when converted to YAML, but deep indentation can increase file size.

Is data uploaded?

No. Everything runs in your browser.

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About YAML Tool

YAML Basics

FAQ