PROPERTIES to YAML Converter Online — Free & Private

Migrate Java .properties files to YAML for GitOps, Spring Boot or Ansible — flat dotted keys stay flat, all processing stays in your browser.

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PROPERTIES → YAML — migration guide
Move Java .properties into YAML for GitOps without a manual JSON hop — dotted keys remain flat by design.

Developer notes

• Dotted keys such as app.name stay flat in YAML — they are not nested under an app: mapping. • Values remain strings unless you reshape upstream. • Indent and YAML layout only apply when output has nested lines — use INI → YAML for section nesting; here only string quoting changes the dump. • Toggle Double-quote all strings to wrap every value in quotes. • Large Spring bundles: desktop Chrome recommended.

Conversion options

String quoting
Minimal quoting (YAML defaults) or double-quote every string value — the only option that changes flat dotted-key output.

Use cases

• Spring Boot teams moving application.properties into application.yml. • GitOps repos that standardise on YAML while ingesting legacy .properties exports. • Quick previews before committing config migration PRs.

About these options

CSV exports: choose a delimiter (Auto follows locale — semicolon on /fr), RFC-minimal vs always-quoted fields, line endings, and whether to emit a header row. CSV imports: delimiter + whether row 1 holds column names (Auto delimiter follows locale only for convenience). JSON output (XML, YAML, or CSV sources): indentation (including compact one-line) and optional recursive key sort. JSON → XML: toggle pretty-printing and indent width. YAML output: indent width, readable vs tighter layout, and deterministic string quoting (there is no source YAML file to “preserve”). XML comments are not represented in the intermediate JSON tree.

Examples

Spring-style flat keys

Input

app.name=FastMinify app.version=2.1.0 app.env=production db.host=db.internal db.port=5432 db.ssl=true feature.checkout-v2.enabled=true feature.dark-mode=false

Output

app.name: FastMinify app.env: production db.port: 5432 db.ssl: true

String quoting (toggle in toolbar)

Input

app.name=FastMinify app.env=production db.url=jdbc:postgresql://db.internal:5432/app

Output

app.name: "FastMinify" app.env: "production" db.url: "jdbc:postgresql://db.internal:5432/app"

Related tools

Round-trip via JSON → YAML, validate with the JSON validator, or return to Properties → JSON when you need JSON explicitly.

PROPERTIES → YAML FAQ

Flat keys and limits

Will app.name become a nested app block?

No — dotted keys stay literal top-level YAML keys (app.name:), matching how .properties stores them.

Can I change YAML indent or layout here?

Not on flat dotted keys — every line stays at the root, so indent and layout have nothing to nest. Use string quoting to control quotes; for nested YAML from INI sections, try INI → YAML.

Is data uploaded?

No — conversion runs entirely in your browser.

What if the .properties file is invalid?

You get a clear parse error in the output panel — nothing is silently dropped.

Properties

Convert Java .properties files to JSON, YAML, INI and TOML.

Properties → JSON

Properties → INI

Properties → TOML

Other converter families

JSON

Convert JSON to YAML, XML, CSV, TOML, TSV, SQL, HTML, Properties and INI — all in your browser.

YAML

Convert YAML to JSON, XML, CSV, TOML, TSV, Properties and INI — cross-target TOML via Properties → TOML and INI → TOML in alsoLinks.

XML

Convert XML to YAML, CSV, JSON, TOML, TSV and HTML.

CSV

Convert CSV to JSON, XML, YAML, TOML and TSV.

TOML

Convert TOML to JSON, YAML, XML, CSV, Properties and INI.

TSV

Convert tab-separated values to JSON and CSV.

SQL

Parse INSERT statements to JSON and CSV.

HTML

Convert HTML to JSON, XML, YAML and Markdown.

Markdown

Convert Markdown to HTML locally.

INI

Convert INI configs to JSON, YAML, Properties (flat INI only) and TOML.

Explore other tool categories

Minify

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

Beautify

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

Unminify

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

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.

Serialization

Serialize and deserialize PHP data structures beside JSON workflows.