OvercastUI

A Steam Overlay-style Chromium browser, built into Minecraft. Browse the web without alt-tabbing or pausing your game. Client-side only, Fabric.

Features

• 🪟 Multiple windows draggable, resizable, with tab support
• 🌐 Full browser back/forward/reload/home, address bar, find-in-page, per-tab zoom
• 📺 Picture-in-Picture videos keep playing after you close the overlay
• 🔲 Split view two pages side by side
• 🎨 Theming adjustable opacity and backdrop
• ⌨️ Rebindable hotkey default Shift+Tab, in-game settings menu
• 💤 Tab suspension sleeps idle tabs to save resources
• ⏸️ Never pauses your game

How to use

1. Press Shift+Tab in-game to open the overlay (rebindable in settings).
2. Wait 10-15 seconds for Chromium to download (Only on first install)
3. Enjoy!

Compatibility

• Loader: Fabric
• Minecraft: 1.21.1, 1.21.11, 26.1, 26.1.1, 26.1.2
• Side: Client only
• Requires: Fabric API

**Description Whether you want an in-game browser to keep a wiki open, a Steam-style web overlay to watch videos while you play, or picture-in-picture for a stream on your second monitor's worth of screen OvercastUI keeps it all inside Minecraft, no alt-tabbing.