Developer Tools
31 tools available
Age Calculator
Calculate your exact age from a birthdate in years, months, and days with next birthday countdown
Chmod Calculator
Visual chmod command builder with permission matrix, special permissions (setuid/setgid/sticky), presets, and multiple output formats
Countdown Timer
Set a target date or quick timer and watch a live countdown with days, hours, minutes, and seconds
Cron Expression Builder
Visual cron expression builder with human-readable descriptions and next execution times
Cron Expression Generator
Visual cron expression builder with advanced presets, human-readable descriptions, and next execution preview
Crontab Parser / Generator
Parse cron expressions into human-readable descriptions, view next execution times, and build cron expressions with an interactive UI
Decision Maker
Randomly pick from a list of options with optional weighted probabilities
Docker Compose Generator
Generate docker-compose.yml files with service configuration, networks, and volumes
Emoji Picker
Browse, search, and copy emojis by category with Unicode code points and shortcodes
Flashcard Creator
Create, organize, and study flashcard decks with flip-card review mode
Git Command Builder
Visual git command builder - select an operation, configure options, and get the complete command
Habit Tracker
Track daily habits with streak counting, calendar grid, and progress visualization
.htaccess Generator
Generate common Apache .htaccess rules for redirects, rewrites, CORS, caching, security headers, and more
IBAN Validator
Validate International Bank Account Numbers (IBAN) with country-specific rules, MOD-97 check, and structural breakdown
Keyboard Shortcut Reference
Quick reference for keyboard shortcuts across VS Code, browsers, macOS, and Windows with search and filtering
Meta Tag Generator
Generate HTML meta tags for SEO, Open Graph, and Twitter Cards with a live Google search preview
Morse Code Player
Convert text to Morse code with audio playback, visual dot/dash display, and adjustable speed
Nginx Config Generator
Generate nginx configuration snippets for reverse proxy, static files, SSL, SPA, load balancing, and more
Notepad
Simple text notepad with auto-save to browser storage. Includes word and character count, dark mode, and download as text file.
Open Graph Preview
Preview how a URL would look when shared on Facebook, Twitter, and LinkedIn
Pomodoro Timer
Boost productivity with the Pomodoro technique: timed work sessions with short and long breaks
Reading Time Estimator
Estimate reading time based on word count with adjustable words-per-minute speed
Regex Cheatsheet
Quick reference guide for regular expressions with interactive match highlighting
Robots.txt Generator
Generate robots.txt files with user-agent rules, sitemap references, and crawl-delay directives
Screen Resolution Info
Display detailed information about your screen: resolution, device pixel ratio, viewport size, color depth, orientation, and touch support.
SSH Config Generator
Generate SSH config file entries (~/.ssh/config) with host aliases, keys, tunnels, and jump hosts
Stopwatch
Precise stopwatch with start, stop, reset, and lap timing using high-resolution performance timing
Text to Speech
Convert text to speech using the Web Speech API. Select a voice, adjust rate and pitch, and preview the playback.
Typing Speed Test
Test your typing speed with random passages. Measures WPM, accuracy, and errors with real-time progress tracking
Unix Permissions Calculator
Calculate Unix file permissions with checkboxes, octal, and symbolic notation
World Clock
Display the current time in multiple time zones simultaneously with UTC offset, day/night indicators, and date info