Developer Workspace

Build, inspect, and debug data and code directly in your browser. Playground inputs remain local and are never sent to server-side execution endpoints.

Data & Query

{}→

JSON Formatter

Format or minify JSON instantly in your browser.

Developer

✓→

JSON Validator

Validate JSON and see clear error details.

Developer

JQ→

JSONPath Tester

Query JSON documents using JSONPath and inspect formatted results.

Developer

SQL→

SQL Playground (SQLite)

Run SQLite queries in your browser with schema explorer and tabular results.

Developer

⟺→

LINQ to SQL Converter

Convert common LINQ query patterns into SQL drafts.

Developer

⇆→

SQL to LINQ Converter

Convert common SQL query patterns into LINQ method syntax drafts.

Developer

Code Playgrounds

WEB→

HTML/CSS/JS Playground

Edit HTML, CSS, and JavaScript with live sandbox preview and console output.

Developer

JS→

JavaScript Playground

Run JavaScript code in an isolated sandbox and inspect logs and errors.

Developer

🎨→

Color Code Explorer

Pick, convert, and extract colors with palette generation, harmonies, and accessibility checks.

Developer

API & Web

API→

REST API Tester

Build and send HTTP requests from your browser, then inspect status, headers, and response bodies.

Developer

URL→

URL Parser / Builder

Parse URL parts and build normalized URLs using browser-native URL APIs.

Developer

Security

🔑→

JWT Decoder

Decode JWT header and payload safely in your browser.

Developer

🪪→

JWT Encoder & Builder

Build JWTs from header and payload JSON, with optional local HMAC signing.

Developer

Text / Validation

.*→

Regex Tester

Test JavaScript regular expressions with matches, capture groups, and replace preview.

Developer

Utilities

#→

UUID Generator

Generate and customize UUID values with selectable versions.

Developer

Tip: open any tool card and use its Related tools section to jump between connected developer workflows.