Beautify YAML Online — Free YAML Beautifier

Beautify YAML configs with consistent indentation. Note: parse-based beautify cannot preserve # comments (see FAQ).

Loading…

YAML Beautification

Beautify YAML online. Consistent indentation and spacing — instant browser processing, no uploads.

Features

Format with indent control (comments not preserved on parse).

Beautify YAML

Format with indent control (comments not preserved on parse).

Basic example

YAML source

apiVersion: apps/v1
kind: Deployment
metadata: {name: checkout-api, labels: {app: checkout}}
spec: {replicas: 3, selector: {matchLabels: {app: checkout}}, template: {metadata: {labels: {app: checkout}}, spec: {containers: [{name: api, image: registry.example/checkout:2.4.1, ports: [{containerPort: 8080}]}]}}}

Beautified YAML

apiVersion: apps/v1
kind: Deployment
metadata:
  name: checkout-api
  labels:
    app: checkout
spec:
  replicas: 3
  selector:
    matchLabels:
      app: checkout
  template:
    metadata:
      labels:
        app: checkout
    spec:
      containers:
        - name: api
          image: registry.example/checkout:2.4.1
          ports:
            - containerPort: 8080

Options

Indent Width

2 or 4 spaces for beautify and unminify.

String Quotes

Minimal or double-always quoting on dump.

YAML Style

Readable (80 col) or tight (compact) dump.

YAML conversion helpers

Use JSON → YAML, YAML → JSON, YAML → XML or YAML → CSV for format conversion.

FAQ — Beautify YAML

Beautification

Why did my comments disappear?

js-yaml parse drops # comments — documented limitation (TD-021).

Minify instead?

Use YAML minifier with removeComments: false to keep # lines.

Is my YAML uploaded to a server?

No. Beautification runs entirely in your browser — your YAML never leaves your device and is not stored by FastMinify.

Beautify vs unminify — which should I use?

Beautify formats readable YAML; unminify restores compressed output — try the YAML unminifier. For day-to-day formatting, stay on YAML beautifier.

Can I customize indentation?

Yes — pick 2 or 4 spaces or tabs in the Beautify options toolbar.

Beautify

Make code readable with consistent indentation — beautify JavaScript, CSS, TypeScript, SCSS, LESS, Markdown, GraphQL, SQL, YAML and more in your browser.

Beautify JS

Beautify CSS

Beautify JSON

Beautify HTML

Beautify XML

Beautify SVG

Beautify SQL

Beautify TypeScript

Beautify SCSS

Beautify LESS

Beautify Markdown

Beautify GraphQL

Beautify TOML

Explore other tool categories

Minify

Shrink code and assets for production — minify JavaScript, CSS, HTML, JSON and XML before gzip or CDN deploy.

Unminify

Expand minified or compressed code — unminify JavaScript, CSS, TypeScript, SCSS, LESS, SQL, YAML and other formats when debugging or reviewing.

Conversion

Transform data between JSON, YAML, XML and CSV locally — no server uploads.

CSS preprocessors

Compile SCSS or LESS to standard CSS in the browser — pair with beautify or minify for a full stylesheet workflow.

JSON Tools

Validate, format, diff and explore JSON payloads — complementary to minifiers and converters.

SVG Tools

Preview, optimize with SVGO, export Data URI, resize, beautify, convert to JSX and validate SVG — all in your browser.

DevOps & Infra

Terraform HCL format/validate/minify, Dockerfile format & lint, Docker Compose and .env validation.

CI/CD

GitHub Actions and GitLab CI — format YAML and check workflow/job structure in your browser.

Logs & observability

Line-oriented JSON/NDJSON and Nginx/Apache access logs — format, filter, validate, and CSV/TSV.

Kubernetes

Multi-doc manifests, structural validate, Ingress/Deployment starters, and Helm values formatting.

Networking / IP

CIDR, subnets, and IPv4/IPv6 helpers — in your browser.

Security & tokens

JWKS, X.509 certificates, and secrets scan — browser-local.

API & schemas

OpenAPI tools to format, validate, and lint your specs.

Encoding

Encode or decode Base64, URL components and HTML entities — client-side only.

Developer utilities

Timestamps, UUID, ULID, Nanoid, cron, passwords, regex, slugify, number bases, case, text diff, and chmod — all client-side.

Text & Markdown

Count words, build Markdown TOCs, and clean line lists — all in your browser.

AI & LLM

Token counting, pricing estimates, and context-window fit — 100% browser-local.

Serialization

Serialize and deserialize PHP data structures beside JSON workflows.