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MJJ Tools

Developer Tool

23 tools available in this category

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Base Convert

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

baseconvertbinary+8

Regex Tester

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

regexregular expressionpattern+7

Curl to Code Converter

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

curlconvertcode+8

VMess Config Parser

Parse and analyze VMess configuration links for educational and debugging purposes

vmessparserconfig+7

Cron Expression Generator

Generate cron expressions easily with visual interface for scheduling tasks

cronscheduletask+7

YAML Validator

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

yamlvalidatoryaml validation+8

Base64 Encoder/Decoder

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

base64encodedecode+10

JSON Formatter & Validator

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

jsonformattervalidator+9

JSON to Table Converter

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

jsontableconvert+9

JSON to Struct Converter

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

jsonstructconvert+11

Coordinate Converter

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

coordinateslatitudelongitude+11

HTML Online Compiler

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

htmlcssjavascript+9

Online SQL Compiler

Write, test, and execute SQL queries online with sample databases. Perfect for learning SQL, practicing queries, and testing database concepts in an interactive environment.

online sql compilersql editor onlinesql query executor+11

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.

utf8utf-8unicode+10

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.

rgb to hexhex to rgbcolor converter+9

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.

color palettecolor generatorweb design colors+12

Barcode Generator

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

barcodebarcode generatorQR code+11

XML Comparator

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

xmlcomparediff+9

JSON to SQL Converter

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

json to sqljson sql convertermysql+9

Address Generator

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

address generatorfake addresstest data+7

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.

domain checkerdomain availabilitywhois+9

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.

cookie formatterHTTP cookiesSet-Cookie+8

Timestamp Converter

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

timestamp converterunix timestampepoch converter+11