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YAML Formatter

Format YAML online to fix indentation, align keys, and make configuration files like Kubernetes manifests and CI pipelines easier to read.

yamlformatbeautifyvalidate

Formatting Options

Preview the shared config renderer across simple, choice-based, and multi-select settings.
Indent size

Choose indentation width for nested mappings and sequences.

Line width

Preferred width before long scalars wrap.

Quote style

Pick a preferred style for quoted scalar values.

Keep quote choices when possible.

Overview

YAML is indentation-sensitive—one wrong space or a mixed tab can break a manifest. Fix yaml indentation and formatting is a common pain when editing Kubernetes configs or CI pipelines. A yaml formatter normalizes indentation, aligns keys, and can expose syntax issues like mixed tabs and spaces. Beautify YAML before committing, debug a config that won't parse, or clean up a manifest from a copy-paste. Fix yaml indentation online in the browser.

Features

  • YAML Formatting

    Beautify YAML content with cleaner spacing and indentation

  • Readable Output

    Make YAML easier to scan, review, and maintain

  • Cleaner Diffs

    Normalize YAML before reviews, commits, or handoff

  • Privacy First

    All processing happens in your browser

Quick Tips
  • •Paste messy or minified YAML to make it easier to read
  • •Format YAML before code reviews to reduce noise from inconsistent spacing
  • •Check the final YAML output before copying it into production files
  • •All data stays in your browser - nothing is sent to servers

When this tool helps

Practical situations where this tool is worth opening.
  • Cleaning up Kubernetes manifests before a deployment review.
  • Normalizing CI configuration files copied from documentation or chat.
  • Checking whether indentation mistakes are causing parser failures.

Common mistakes to avoid

A few easy ways these workflows go wrong in practice.
  • Mixing tabs and spaces in the same document.
  • Assuming YAML accepts JSON-style trailing commas and comments the same way every tool does.
  • Formatting a file without checking whether anchors, aliases, or comments were meant to stay in a specific place.

Worked examples

Short examples that show what this tool is useful for.
Fix noisy indentation
Messy spacing becomes consistent and easier to review.

Input

service:
   name: mydevkit
   ports:
    - 80
    - 443

Output

service:
  name: mydevkit
  ports:
    - 80
    - 443

Cleaner indentation reduces review noise and helps you spot structure problems faster.

FAQ

Clarifications people often need before using the output.

Related guides

Original reading that explains the workflow around this tool.
How To Debug JSON Without Breaking Payloads
A practical guide to formatting, validating, and sharing JSON safely while debugging APIs, config files, and webhooks.

6 min read