JavaScript

Welcome to the PDF Watermark Maker! This lightweight web application lets you quickly and securely add customizable text watermarks to your PDF documents. Built with HTML, CSS, and JavaScript, our tool runs entirely in your browser — meaning your files never leave your device, ensuring complete privacy. Whether you need to mark documents as "Confidential," add draft notices, or include branding

Welcome to the Advanced Age Calculator – a sleek, interactive tool that reveals your exact age down to the hour while uncovering fascinating insights about your life journey! Built with modern HTML, CSS, and JavaScript, this app goes beyond basic calculations to display your zodiac sign, generation, upcoming milestones, and even your life progress percentage. With its responsive design and dark

Welcome to the Internet Speed Checker – your go-to web tool for testing and analyzing your internet connection performance! Built with modern HTML, CSS, and JavaScript, this application provides real-time measurements of your download/upload speeds, ping latency, and connection stability. With its sleek, interactive dashboard and responsive design, you can easily monitor your network performance

The Factors Game is an interactive web application built entirely with JavaScript. The game is very simple. The player must combine numbers and, when encountering a factor, the number will be divided by that factor. Otherwise, it will be added to the current number. The player must think carefully and apply their mathematical knowledge. The Factors Game in JavaScript offers straightforward

Welcome to the Image Compressor App – your lightweight, browser-based solution for optimizing images effortlessly! This powerful yet simple tool lets you reduce image file sizes without compromising quality, helping your websites load faster while saving storage space. Built with pure HTML, CSS, and JavaScript, it works entirely in your browser, ensuring your images are processed locally for

Welcome to the Payback Period Calculator – your intuitive tool for smart investment analysis! This web application helps you determine how long it will take to recover an initial investment by calculating both the simple payback period (ignoring time value of money) and the discounted payback period (accounting for discounted cash flows). Built with HTML, CSS, and JavaScript, it offers a clean

Welcome to the Reaction Time Tester – a fun and interactive web app designed to measure how quickly you can respond to visual cues! Built with HTML, CSS, and JavaScript, this tool challenges your reflexes with randomized delays and color-based prompts. Whether you're looking to improve your reaction speed or just want to test your reflexes, this simple yet engaging application provides instant

Welcome to the Advanced Tic-Tac-Toe Game, a fresh take on the classic strategy game with exciting new mechanics! Built with HTML, CSS, and JavaScript, this version challenges players to think differently by limiting them to just 3 marks on the board at any time. When a player places their 4th mark, their oldest mark disappears in a smooth animation, adding a whole new layer of strategy. The game

The Mario Clone Game is an interactive web application built entirely with JavaScript. The gameplay is similar to the original Mario game, where your goal is to travel through stages, overcome obstacles, and rescue the princess. The player can control the character using keyboard bindings (Left Arrow Key to move left, Right Arrow Key to move right, and Spacebar to jump). The Mario Clone Game in

Welcome to the Speed Converter Tool – your go-to solution for quick and accurate speed unit conversions! This intuitive web app lets you effortlessly switch between kilometers per hour (km/h), miles per hour (mph), meters per second (m/s), knots, and Mach number. Whether you're calculating travel speeds, working on physics problems, or just curious about different measurement systems, this tool