PROPERTIES to JSON Converter Online — Free & Private

Paste PROPERTIES and get JSON output with zero server uploads. Everything runs locally in your browser.

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PROPERTIES → JSON — developer guide
PROPERTIES → JSON converter with the same privacy guarantees as other FastMinify tools.

Developer notes

• Properties `#` and `!` comments are dropped — output is strict JSON with no comment syntax. • Validate inputs upstream. • Reverse conversions may be lossy depending on format. • Large files: prefer desktop browsers.

Use cases

• Quick prototyping between formats. • Lightweight CI pipelines without middleware. • Config review before commit.

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 is auto-detected from the first line (comma, semicolon, tab, or pipe) — toggle whether row 1 holds column names. 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

Basic example

Input

app.name=FastMinify app.version=2.1.0 app.env=production # database settings db.host=db.internal db.port=5432 db.ssl=true feature.checkout-v2.enabled=true

Output

{ "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" }

Second example

Input

app.name=FastMinify app.version=2.1.0 app.env=production # database settings db.host=db.internal db.port=5432 db.ssl=true feature.checkout-v2.enabled=true

Output

{ "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" }

Related tools

Explore other converters from the same source format in the sibling links section.

PROPERTIES → JSON FAQ

Privacy and limits

Is my data sent to the server?

No — everything stays in your browser.

What inputs are supported?

A documented subset; invalid input shows a clear error.

What about .properties comments?

They are removed during parse. Output is strict RFC JSON — not JSONC — so lines like `# database settings` never appear in the result.

Can I download the result?

Yes — use Download after a successful conversion.

Properties

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

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.