Minify YAML Online — Free YAML Compressor

Minify YAML configs instantly — K8s, CI/CD and Docker Compose files. Choose comment preservation or parse-based tight output.

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YAML Minification
Minify YAML online.

Features

Compress configs with optional comment handling.

Minify YAML

Compress configs with optional comment handling.

Basic example

Input YAML

# Kubernetes Deployment for checkout-api 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

Minified 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

Remove Comments
When true, all # comments are stripped. When false, full-line # comments are kept and the YAML structure is still compacted.

Full-line # comments are kept when false; inline # comments are still dropped by parse

String Quotes
Minimal or double-always quoting on dump.

YAML conversion helpers

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

FAQ — Minify YAML

Minification

Are # comments preserved?

When removeComments is false, full-line # comments are kept at the top. Inline # comments are still dropped by parse.

Beautify YAML?

See YAML beautifier — comments cannot survive parse.

Verify it yourself

FastMinify processes your input in the browser. Inspect the network panel or read our validation gate to confirm nothing leaves your device.

Minify

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

Minify JS

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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.

Encoding

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

Serialization

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

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Beautify

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

CSS preprocessors

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

Color & CSS Tools

Paste-local WCAG contrast checking with modern CSS color syntax — pair and matrix views, never uploaded.

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.

HTTP Tools

Paste-local cURL, HTTP messages, URLs, HAR files, and Cookie / Set-Cookie headers — format and inspect in your browser, never sent.

SEO / Web Tools

Generate meta tags, Open Graph, and Twitter Card output locally — previews simulated from your inputs, never fetched from your live site.

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.

Test Data

Synthetic field values for fixtures and DB seed — reserved-range phone numbers first.

Barcode labels

Draw Code 128, EAN-13, and UPC-A label images in the browser — PNG and SVG download, not a GS1 lookup.