Zone of Tools
A curated collection of free, fast, and reliable developer tools
Business Tools
Advanced Salary Calculator
Calculate take-home pay with comprehensive tax analysis, overtime, benefits, and detailed breakdowns for all pay periods
Invoice Generator
Create professional PDF invoices with customizable templates
Merge PDF
Combine multiple PDF files into a single document with drag-and-drop interface
Word to PDF
Convert Microsoft Word documents (.docx, .doc) to PDF format with formatting options
PDF to Word
Convert PDF documents to editable Word format (.docx) with customizable formatting
PDF to PNG
Convert PDF pages to high-quality PNG or JPG images with customizable resolution and quality settings
Excel CSV Converter
Convert Excel files to CSV format or CSV files to Excel with multi-sheet support and custom formatting options
Business Proposal Generator
Create professional business proposals with customizable templates, pricing calculators, and timeline management
Letterhead Maker
Design professional letterheads with customizable templates and export to PDF
Business Card Maker
Design professional business cards with customizable templates and export
Email Signature Generator
Create professional email signatures with custom styling, social media integration, logos, and multiple export formats
SEO Tools
Meta Tag Generator
Generate HTML meta tags for better SEO and social media sharing
Keyword Density Analyzer
Analyze keyword density and frequency in your content
Robots.txt Generator
Generate robots.txt files to control search engine crawling
Advanced URL Slug Generator
Generate SEO-friendly URL slugs with multiple formats, bulk processing, and optimization features
Domain Authority Checker
Analyze domain authority, SEO metrics, and website performance scores
Local SEO Audit
Comprehensive local SEO analysis with NAP consistency, GMB audit, citation analysis, and review monitoring
Advanced Sitemap Generator
Generate XML and HTML sitemaps with website crawling, URL management, priority settings, and category grouping
Schema Markup Generator
Generate JSON-LD structured data for FAQ, Article, Product, and Local Business schemas with validation and testing
Development Tools
JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting
Cron Expression Generator
Create and understand cron expressions with visual interface
Favicon Generator
Generate all favicon sizes and formats from a single image. Create ICO, PNG, and Apple touch icons for perfect compatibility
Markdown Editor
Professional markdown editor with live preview, templates, export options, and comprehensive formatting tools
Text Compare
Compare two text files side-by-side and highlight differences with detailed diff analysis and export reports
Images Tools
Image Converter
Convert images between JPG, PNG, and WebP formats with quality controls
Image to Text Extractor
Extract text from images with 99%+ accuracy using multiple OCR engines
Image SEO Optimizer
Advanced image optimization with resize, compress, ALT suggestions, filename optimization, and responsive srcset builder
Utilities Tools
Word & Character Counter
Advanced text analysis tool with word count, character count, keyword frequency, and 12+ text transformations
QR Code Generator
Generate customizable QR codes for URLs, text, WiFi, and contact info
Age Calculator
Advanced age calculator with life milestones, zodiac signs, and detailed statistics
Percentage Calculator
Advanced percentage calculator with 10+ calculation modes including discounts, tips, grades, and compound percentages
Random Name Generator
Generate awesome names for people, fantasy characters, businesses, pets with cultural diversity and customization
Advanced Username Generator
Generate unique usernames for gaming, social media, and professional use with multiple styles including aesthetic, gaming, and name-based options
Random Word Generator
Generate random words with advanced filtering, favorites, and export options for creative writing and brainstorming
Advanced Typing Test
Practice typing with image reference, multi-language support, real-time statistics, and comprehensive performance analysis
Advanced Signature Maker
Create handwritten-style signatures with multiple unique styles, customization options, and export to PNG/SVG formats
Advanced Barcode Generator
Generate professional barcodes with multiple formats, batch processing, and extensive customization options
Advanced Time Converter
Convert between time zones, world clock, meeting planner, UTC converter with comprehensive time calculations
Advanced Unit Converter
Convert between units of length, weight, temperature, volume, area, speed, time, and digital storage with precision
Finance Tools
Security Tools
Health Tools
Advanced BMI Calculator
Comprehensive BMI calculator with graphical charts, health analysis, progress tracking, and personalized recommendations
Pregnancy Calculator
Track your pregnancy journey with due date calculator, weekly milestones, baby development tracker, and health information
Email Tools
Fun Tools
Love Calculator
Calculate love compatibility percentage between two people with detailed analysis and relationship advice
Friendship Compatibility Test
Take a fun quiz to discover how compatible you are with your friends. Get detailed friendship analysis and insights
Crush Name Generator
Combine two names to create perfect couple names and ship names. Generate creative romantic name combinations
Fake Chat Generator
Create realistic fake chat screenshots for WhatsApp, iMessage, Instagram, Telegram, and Messenger. Perfect for memes and mockups
Educational Tools
Advanced English Level Tester
Test your English proficiency with comprehensive CEFR-based assessment. Get accurate results from A1 to C2 levels
Advanced IQ Tester
Comprehensive intelligence test with 25 questions covering pattern recognition, logic, numerical, verbal, and spatial reasoning
Math Level Tester
Test your mathematics skills from elementary to advanced levels. Get instant results with topic breakdown and recommendations
Brain Teaser Quiz
Challenge your mind with 20 brain teasers including logic puzzles, riddles, lateral thinking problems, and wordplay
SAT Practice Test
Practice for the SAT with 40 authentic-style questions covering Reading, Writing and Language, and Math sections
GRE Vocabulary Challenge
Master 50 essential GRE words with multiple quiz modes including flashcards, multiple choice, and matching games
Geography Quiz
Test your world geography knowledge with 50+ questions about capitals, flags, landmarks, and more
Science Quiz
Test your Physics and Chemistry knowledge with 50+ questions covering fundamental concepts and formulas
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