Developer Tools

Formatters, converters, generators, and validators for developers. Boost your coding productivity instantly.

21 free tools
Popular

JSON Formatter & Validator

Format, beautify, and validate JSON online. View as tree, detect errors instantly.

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JSON to CSV Converter

Convert JSON arrays to CSV format instantly. Download as .csv file.

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CSV to JSON Converter

Convert CSV files or data to JSON format instantly.

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JSON to XML Converter

Convert JSON to well-formed XML with custom root element and attribute support.

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XML to JSON Converter

Convert XML to clean JSON format with attribute and namespace handling.

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HTML Formatter & Beautifier

Format, beautify, and minify HTML code with proper indentation.

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CSS Formatter & Beautifier

Format, beautify, and minify CSS/SCSS code with property sorting.

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JavaScript Formatter

Format, beautify, and minify JavaScript code with Prettier-style output.

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SQL Formatter

Format and beautify SQL queries with dialect support for MySQL, PostgreSQL, and more.

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Markdown Preview

Write and preview Markdown in real-time with GitHub-flavored rendering.

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HTML to Markdown

Convert HTML code or web page content to clean Markdown.

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Regex Tester

Test and debug regular expressions with real-time match highlighting and group extraction.

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UUID Generator

Generate UUID v1, v4, and v7 — bulk generate up to 1000 UUIDs at once.

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Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for any text or file.

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Password Generator

Generate strong, secure random passwords with a live strength meter.

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Random String Generator

Generate random strings with custom charset, length, and bulk output.

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Cron Expression Generator

Build cron expressions visually and get human-readable schedule descriptions.

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JWT Decoder

Decode and inspect JWT tokens — view header, payload, and signature instantly.

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Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa. Live clock included.

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User Agent Parser

Parse any user agent string to detect browser, OS, device type, and engine.

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Code Diff Checker

Compare two pieces of code or text and see the diff highlighted side-by-side.

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