Kai Sing
Building tools for the web
Developer crafting Chrome extensions, games, and web experiences.
About
I build things that make the web more useful and fun — from browser extensions that streamline your workflow to games that bring people together. I believe great tools should feel effortless.
Always shipping. Always learning. Always otterly curious.
Projects
Boost JS CSS Injector
Inject custom JavaScript and CSS into any webpage. Perfect for quick tweaks, testing, and personalizing your browsing experience.
Command Palette
A sleek command palette for your browser. Access commands, bookmarks, and actions instantly with keyboard shortcuts.
Stream Grok Prompt Navigator
Navigate and manage your Grok prompts with ease. Organize, search, and streamline your AI prompt workflow.
Flare — Ask AI & Web Copilot
Your AI-powered web copilot. Ask questions, get summaries, and interact with web content intelligently.
UNO Rampage
Classic UNO reimagined with custom rules. Play your way with friends using configurable game modes and house rules.
Toolbox
A collection of client-side only tools built for developers and creators. Includes a QR Code Generator, String Formatter, Icon Resizer, and more — all running locally in your browser with no server required.
Let's Connect
Find me across the web — I'm always up for a chat about extensions, games, or anything web.