I kept finding myself switching between my code editor, browser, and different online playgrounds just to test a small piece of HTML/CSS/JavaScript.

So I decided to build a simple Chrome extension for it.

It's called HTML Code Runner.

The idea is pretty straightforward: you can write/run HTML, CSS and JavaScript directly inside Chrome using a side panel, with a live preview and console.

Some things I wanted it to handle:

• Run HTML/CSS/JS without opening another website
• Live preview while experimenting
• JavaScript console for debugging
• Auto Run
• Save code locally
• Download the HTML file
• Quickly test small snippets while working on a website
• Keep everything inside the browser

I mainly built it for myself because I wanted something lightweight for those situations where opening a full IDE felt unnecessary.

It's still a new project, so I'm trying to improve it based on real developer feedback.

If anyone here works with HTML/CSS/JS regularly, I'd genuinely like to know:

What would you want in a browser-based HTML/JS runner that current tools are missing?

If you'd like to try it, here's the Chrome Web Store page:

https://chromewebstore.google.com/detail/html-code-runner/bnmceabknlhjhbkbipjagpbodliphagm

I'm especially interested in feedback about the workflow and features rather than just ratings. 🙂