Online Tools
IP Address Lookup
Instantly check your IP address online. View your IPv4 and IPv6 addresses along with location details including ISP, country, and city. Free IP lookup tool with no registration required.
QR Code Generator
Free QR code generator online. Create QR codes for URLs, text, WiFi credentials, and vCard contacts instantly. Download high-resolution PNG images with no signup needed.
JSON Formatter
Online JSON formatter and validator. Beautify, validate, and minify your JSON data in one place. Free JSON editor for developers with syntax error detection and formatting options.
XML Formatter
Online XML formatter and converter. Beautify, validate XML data and convert to JSON format. Free XML editor for developers with syntax validation and formatting options.
Markdown Viewer
Online Markdown editor with live preview. Write and render Markdown syntax in real-time with GitHub-flavored styling. Perfect free tool for README files and documentation editing.
Base64 Converter
Online Base64 encoder and decoder. Encode text to Base64 format or decode Base64 strings back to original text instantly. Free conversion tool for developers and data handling.
Regex Tester
Online regular expression tester. Test regex patterns in real-time and see matching results instantly. Free tool with flag options, highlighting, and pattern validation for developers.
UUID Generator
Online UUID generator. Create unique UUID v4 identifiers instantly. Generate multiple UUIDs at once and copy them easily. Free GUID generation tool for developers and database work.
Hash Generator
Online hash generator. Calculate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly. Free checksum tool useful for file integrity verification and password hashing for developers.
Ladder Game
Online ladder game for fair random selection. Determine order or pick winners with transparent randomization. Perfect free tool for team assignments, lottery picks, and decision making.
Kelly Criterion Calculator
Calculate optimal betting and investment ratios with Kelly Criterion. Enter probability and odds to find the mathematically optimal bet size for bankroll management. Free strategy tool.
Sudoku
Online Sudoku puzzle game. Play puzzles at various difficulty levels or get hints to solve them. Free number puzzle game that helps train your brain and improve logical thinking skills.
Loan Repayment Calculator
Loan repayment calculator to manage multiple loans at once. Calculate monthly payments and total interest for different repayment methods. Find the optimal debt payoff strategy for you.