Features

Precision Validation

Instantly identifies syntax errors, including invalid indentation, duplicate keys, and bad formatting, with line-number accuracy.

Standardized Formatting

Automatically re-indents your code to standard 2-space or 4-space conventions, making it clean and readable.

YAML to JSON

Seamlessly converts your valid YAML content into JSON format for usage in APIs or Javascript applications.

Batch Processing

Upload large .yaml or .yml files directly to process extensive configurations without manual copy-pasting.

One-Click Export

Download your perfected YAML file or copy the result to your clipboard instantly.

About YAML Formatter

The YAML Formatter is an essential tool for developers, DevOps engineers, and system administrators who work with configuration files daily. YAML (YAML Ain't Markup Language) is known for its human readability but is notoriously strict about indentation and syntax. A single misplaced space can break your entire deployment. This tool solves that problem by instantly validating your YAML code, highlighting syntax errors with precision, and formatting it into a clean, consistent structure. It supports complex YAML features like anchors and aliases, handles multi-document files, and operates entirely in your browser for maximum security. Whether you are debugging K8s manifests, writing Ansible playbooks, or configuring CI/CD pipelines, this tool ensures your YAML is error-free and production-ready.

How to Use YAML Formatter

Input YAML

Paste your raw YAML code into the left editor or upload a file from your computer.

Review

The tool automatically processes your input. Any errors will be highlighted immediately.

Refine

Adjust indentation settings or edit the input to fix reported errors.

Export

Copy the formatted code or download the clean .yaml file for your project.