I saw this mind-blowing experiment, so I made a simple version of it

In plain words

This project enables two browser windows to communicate and share their screen and window dimensions, positions, and sizes through socket connections. It uses WebSocket technology instead of localStorage, allowing the data exchange to be extended for sharing between multiple users. The tool is designed for developers and curious users interested in experimenting with browser window communication and real-time data synchronization across connected clients.

written from the facts on this page · September 2026

From the sources

Contribute to Momciloo/fun-with-sockets development by creating an account on GitHub.

In the maker’s words, at launch

Two browser windows (acting as socket clients) communicate their: - Screen dimensions - (screen.width, screen.height) - Window dimensions - (window.innerWidth, window.innerHeight) - Window X/Y position - (window.screenX, window.screenY) ...or whichever calculation works best for you. The original work by Bjorn…

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  Screen Sharing in the Browser2024 · github.com · ▲219

  Seeing all the hype around Bolt.new, I decided to give it a try, and within just 30 minutes, I built a fully functional web app for screen sharing. How It Works: - One user opens a room and receives a unique code. - Participants join by simply entering the code to view the shared screen. After that initial build, I moved the project to Cursor to continue iterating and enhancing its features. Github: https://github.com/tonghohin/screen-sharing Demo: https://share-your-screen.vercel.app

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• MD
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  Hi HN, I’m Kashish, one of the co-founders of SpeedVitals, a platform for testing & monitoring website performance with a major emphasis on Core Web Vitals. Until now, our platform has only focused on Synthetic/Lab testing, such as Lighthouse tests and TTFB tests. But now, we have developed a Real-User Monitoring platform that doubles up as a Web Analytics tool. One major feature we have that most RUM tools lack is Performance Audits. Just like Lighthouse audits work on Lab test data, our audits work across all the real-user visits and gives suggestions on what task to prioritize first.…

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