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Developer Tools That Just Work

Format JSON, run SQL queries, write Java, format Python — all free, all instant, all in your browser.

All 📋 JSON 1 💻 Code 21 📝 Text 5 🗄️ Data 16 ⚡ Generator 5 📄 Diff Checker 2 📄 Devops 2 🍃 Spring Boot 11 🐍 Python 4
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New IDE

SQL Playground

Write SQL queries against sample schemas — results as table

Code 94 uses
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Python Formatter

Format Python code to PEP 8 standard in your browser

Code 100 uses
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IDE

HTML Playground

Write HTML, CSS and JS — see live preview instantly

Code 58 uses
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Java 8 Streams Visualizer

Build Java 8 stream pipelines visually. Drag & drop operations, see the output, get AI explanations and quiz questions.

Code 54 uses
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SQL Interview Lab

Practice 100+ runnable SQL interview questions with HR, ecommerce, and blog analytics schemas. Includes official answers, SQLite execution, and AI explanations.

Code 66 uses
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Css Loaders

Interactive 40+ Css loaders and framework code generators

Code 104 uses
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Code Minifier tool

Code Minifier tool - HTML, CSS, JS, TS, Python, Java, Ruby, PHP, and Rust with rich extra features

Code 48 uses
CODE
New IDE

Code Snippet Generator

Generate ready-to-use code snippets for Bootstrap, Tailwind, Laravel Blade, Java JSP, Python, Go, Rust, React, Vue, Angular, and more.

Code 52 uses
VTL
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Velocity Code Formatter

Format Apache Velocity / VTL templates with directive indentation, spacing cleanup, diagnostics, copy, and download.

Code 36 uses
cURL
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cURL ↔ Code Converter

Paste a cURL command and get equivalent Java HttpClient, JavaScript fetch, or Python requests code instantly.

Code 48 uses
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JSON to YAML

Convert JSON to YAML with configurable line width.

Code 50 uses
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YAML to JSON

Parse YAML and output formatted JSON.

Code 52 uses
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JSON to CSV

Flatten JSON arrays to CSV.

Code 44 uses
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CSV to JSON

Convert CSV rows to JSON objects.

Code 44 uses
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XML to JSON

Parse XML documents to structured JSON.

Code 48 uses
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JSON to XML

Convert JSON to XML with configurable root tag.

Code 44 uses
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JSON to TypeScript

Infer TypeScript interfaces from JSON samples.

Code 50 uses
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JSON to Zod

Generate Zod validation schemas from JSON.

Code 54 uses
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JSON to Pydantic

Generate Pydantic models for FastAPI from JSON.

Code 50 uses
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JSON Schema Generator

Generate JSON Schema draft 2020-12 from JSON examples.

Code 50 uses
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JSON to Go

Generate Go structs with JSON tags from sample payloads.

Code 52 uses