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A complete starter template for creating browser-based roguelike games with level generation, inventory systems, and mobile-friendly controls.

Paste raw JSON and get clean, formatted output instantly.

Generate harmonious color schemes using the OKLCH color model with CSS variable output.

Encode and decode Base64 text instantly in the browser.

Edit, format, validate, and explore JSON with tree and code views.

Turn JavaScript code into draggable bookmarklets instantly. Paste your code, get a ready-to-use bookmarklet link you can drag to your browser toolbar.

A visual editor for creating and manipulating SVG paths. Click to add points, drag to adjust curves, and export clean SVG code.

The Cyber Swiss Army Knife: encoding, hashing, encryption, compression, and hundreds more operations.

Compare two blocks of text side-by-side with highlighted differences. Your text never leaves the browser.

An elegant browser-based command-line console. Type commands, see output, and build interactive terminal-style experiences in the browser.

Test regular expressions with live highlighting. See matches, groups, and flags in real-time.

Pretty-print SQL queries with support for MySQL, PostgreSQL, and many other dialects.

Visualize JSON as an expandable tree structure.

A tiny, elegant code editor for the browser with syntax highlighting. Write and edit code in a clean, minimal interface.

A browser-based life simulation game where you play as a developer. Make career choices, manage your skills, and try to succeed in the tech industry.

Test your knowledge of JavaScript's tricky == operator. Fill in the equality table by guessing which comparisons return true — a fun challenge for developers.

Paste HTML and get clean Markdown output instantly. A live converter for turning web content into readable, portable Markdown text.

Convert between binary, decimal, octal, and hexadecimal number systems.

A collaborative platform where developers worldwide can showcase and discover diverse coding projects across web development, mobile apps, machine learning and more.

Write HTML, CSS, and JavaScript with instant live preview. A lightweight CodePen-style editor in your browser.

A starter template for creating generative art, visualizations, and interactive demos using the Pts.js library. Includes build tools and supports both JavaScript and TypeScript.

JavaScript API client library for Passky password management services. Provides developers with tools to integrate password management functionality into web applications.

A page displaying every standard HTML5 element. Great for testing CSS themes, browser rendering, and learning HTML5 tags.

A beautiful, lightweight dialog and modal library demo. See alerts, confirms, prompts, and custom dialogs with smooth animations.

Design color gradients and export to CSS, SVG, Python, and more. Shareable via URL.

Convert Scratch projects into standalone HTML files. Upload a Scratch project and download a self-contained web page you can share.

A tiny live Markdown previewer — type Markdown on the left, see formatted HTML on the right. Ultra-lightweight at under 5KB.

Create entire web pages stored in a URL — write HTML, CSS, and JavaScript, then share as a single link. No server needed, everything lives in the address bar.

A clean, minimal ChatGPT interface built with pure JavaScript. Chat with OpenAI models in a simple, distraction-free browser UI.

Compress JSON into ultra-short URL-friendly strings. Paste JSON, get a crushed version you can share in URLs or query params.

Beautiful, accessible modals built with pure CSS and enhanced with JavaScript. Multiple styles, sizes, and animation options.

An interactive JavaScript console. Type JavaScript, see results instantly. Perfect for experimenting and learning.

Live status dashboard for the Strait of Hormuz. See current shipping conditions, threat level, oil flow data, and the latest news headlines.

On-screen measurement tool with rulers in centimeters, millimeters, inches, and feet. Calibrate to your display.

A simple web-based music player with playlist management, playback controls, and track progress visualization. Perfect for learning web development basics.

Professional color picker with WCAG contrast checking and multiple color spaces.

Train your musical ear with jazz chord progressions and interval recognition.

A text-based life simulation incremental game where you progress from beggar to ultimate being through career advancement and skill development. Choose your path through military ranks, magic academy, or commoner work across multiple lifetimes.