Skip to content
🔧

YAML Formatter

JSON & Data Format · Free Online Tool

YAML beautify and indent normalization.

By CoderNewbie Team
Whitespace normalized
Formatted YAML
130 chars
129 chars
name: CoderNewbie
version: 1.0.0
database:
    host: localhost
    port: 5432
    enabled: true
tags:
    - tools
    - developer

Indent Normalized

Tabs become 2 spaces, trailing whitespace trimmed.

JSON → YAML

Paste JSON and get clean, indented YAML out.

Blank Lines

Collapses runs of blank lines into a single gap.

How to Use YAML Formatter

  1. 1Paste your input data (JSON, CSV, XML, YAML, etc.) into the input field.
  2. 2The tool automatically processes and validates your data.
  3. 3Review the converted output in the result panel.
  4. 4Copy or download the converted result.

Features

  • ✓100% free — no signup, no subscription, no ads
  • ✓Runs entirely in your browser — data never leaves your device
  • ✓Fast and lightweight — instant results
  • ✓Cross-platform — works on desktop, tablet, and mobile

Frequently Asked Questions

Can I convert large JSON files?

Yes, but performance depends on your browser. Files up to 10MB are generally handled well.

Do you validate the input?

Yes, most tools validate input and show error messages with line numbers for invalid data.

Can I download the converted result?

Yes, most conversion tools provide a download button for the output file.

Related Tools

JSON Formatter

Format, validate, and minify JSON.

→

JSON to CSV

Convert JSON array to CSV format.

→

CSV to JSON

Convert CSV data to JSON array.

→

JSON to XML

Convert JSON objects to XML format.

→

XML to JSON

Convert XML to JSON using DOMParser.

→

JSON to YAML

Convert JSON to YAML format.

→

Learn the concept

Learn the concept

Understand the programming ideas behind this tool.

View lessons