Developer Tool

Tools in Developer Tool category

39 tools found in Developer Tool

Developer Tool

Base Convert

Convert numbers between different bases (binary, octal, decimal, hexadecimal) with support for bases 2-36

Developer Tool

Regex Tester

Test and debug regular expressions with real-time pattern matching, flags, and detailed match analysis

Developer Tool

Curl to Code Converter

Convert curl commands to code in multiple programming languages including JavaScript, Python, PHP, and more

Developer Tool

VMess Config Parser

Parse and analyze VMess configuration links for educational and debugging purposes

Developer Tool

Cron Expression Generator

Generate cron expressions easily with visual interface for scheduling tasks

Developer Tool

YAML Validator

Validate YAML syntax, check for errors, and format YAML files

Developer Tool

Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 strings back to readable text

Developer Tool

JSON Formatter & Validator

Format, validate, and minify JSON strings with syntax checking and beautification

Developer Tool

JSON to Table Converter

Convert JSON data to HTML table format with customizable styling and export options

Developer Tool

JSON to Struct Converter

Convert JSON data into struct definitions for various programming languages including Go, TypeScript, Java, C#, Rust, and Python

Developer Tool

Coordinate Converter

Convert between different coordinate formats: DD, DDM, DMS, UTM, and MGRS

Developer Tool

HTML Online Compiler

Write, edit and preview HTML, CSS, and JavaScript code in real-time with instant live preview

Developer Tool

Online SQL Compiler

Run real SQL in your browser on a full SQLite engine (WebAssembly). JOINs, window functions and writes all work; nothing leaves your device.

Developer Tool

UTF-8 Encoder/Decoder

Encode text to UTF-8 byte sequences or decode UTF-8 bytes back to readable text. Support multiple output formats including hex, decimal, and binary.

Developer Tool

RGB to Hex Converter

Convert RGB color values to Hex color codes and vice versa. Visual color picker, palette support, and real-time color preview for web design and development.

Developer Tool

Color Palette Generator

Generate beautiful color palettes for web design. Create harmony colors, explore preset combinations, and copy colors in multiple formats for your projects.

Developer Tool

Barcode Generator

Generate professional barcodes in multiple formats including CODE128, EAN-13, UPC, CODE39. Customize colors, sizes, and download as PNG or SVG.

Developer Tool

XML Comparator

Compare two XML files side by side, find differences, validate XML structure, and format XML content

Developer Tool

JSON to SQL Converter

Convert JSON data to SQL statements for MySQL, PostgreSQL, SQLite, Oracle, and SQL Server

Developer Tool

Address Generator

Generate realistic addresses for USA, UK, Italy, China and more countries with complete details including name, phone, email and postal code

Developer Tool

CPF Generator

Generate and validate valid Brazilian CPF numbers for software testing and form validation. Fake data for testing only.

Developer Tool

CNPJ Generator

Generate and validate Brazilian CNPJ numbers, including the new alphanumeric format, for software testing and form validation. Fake data for testing only.

Developer Tool

Domain Availability Checker

Check domain availability across multiple extensions (TLDs) in bulk. Instantly verify if domains are available for registration with comprehensive extension support and export capabilities.

Developer Tool

Cookie Formatter

Parse, format, and convert HTTP cookies between different formats. Support for Set-Cookie headers, JSON, cURL, JavaScript, PHP, and Python cookie formats with detailed attribute parsing.

Developer Tool

Timestamp Converter

Convert between Unix timestamps and human-readable dates with multiple format support and timezone handling. Perfect for developers and system administrators.

Developer Tool

UUID Generator

Generate UUID v4 and v1 identifiers with bulk generation, case options, and one-click copy

Developer Tool

URL Encoder/Decoder

Encode or decode URL strings with support for encodeURIComponent and encodeURI modes

Developer Tool

URL Parser

Parse URLs into components: protocol, hostname, port, pathname, query parameters, and hash

Developer Tool

JWT Parser

Decode and inspect JSON Web Tokens (JWT) with header, payload analysis, and expiry checking

Developer Tool

QR Code Generator

Generate customizable QR codes from text or URLs with color, size, and error correction options

Developer Tool

Chmod Calculator

Calculate Unix file permissions with visual checkboxes, octal notation, and symbolic representation

Developer Tool

Slugify String

Convert text into URL-friendly slugs with customizable separator, case, and length options

Developer Tool

JSON to CSV Converter

Convert JSON arrays to CSV format with customizable delimiters, headers, and quoting options

Developer Tool

YAML JSON Converter

Convert between YAML and JSON formats bidirectionally with formatting options

Developer Tool

Markdown to HTML

Convert Markdown text to HTML with live preview and GitHub Flavored Markdown support

Developer Tool

HTML Entities Encoder/Decoder

Encode special characters to HTML entities or decode HTML entities back to text

Developer Tool

JSON XML Converter

Convert between JSON and XML formats bidirectionally with proper structure handling

Developer Tool

IPv4 Subnet Calculator

Calculate IPv4 subnet details including network address, broadcast, host range, and CIDR notation

Developer Tool

MAC Address Lookup

Look up MAC address vendor/manufacturer information and generate random MAC addresses

We use cookies to enhance your experience

This website uses cookies to ensure you get the best experience on our website. We respect your privacy and are committed to protecting your personal data.

MJJ Tools - 160+ Free Online Tools & Utilities | MJJ Tools