OvercastUI

Overcast

A Steam Overlay-style Chromium browser, built into Minecraft. Client-side only. Never pauses your game.

By merenotnoone

What it is

Press a hotkey (default: Shift+Tab) and a translucent overlay fades in over gameplay, chat, the pause menu — even a disconnect screen. It hosts draggable, resizable browser windows with real tabs, full nav (back/forward/reload/home), an address bar, and bookmarks — powered by an actual Chromium engine (via MCEF/JCEF). Pages render, scroll, play video with audio, and accept form input like a real browser, not a stripped-down webview.

Close the overlay and control snaps right back to the game — nothing pauses, and anything still running (like a Picture-in-Picture video) keeps going in the background.

Core features

• Multiple windows & tabs — independently draggable, resizable, each with its own tab strip
• Full nav chrome — back/forward/reload/home + address bar (URLs or DuckDuckGo search)
• Picture-in-Picture — shrink any tab into a floating window that keeps playing after you close the overlay; draggable, resizable, restorable
• Split view — two tabs side-by-side in one window
• Find-in-page (Ctrl+F) and per-tab zoom
• Private windows for separate, unlogged browsing
• Tab suspension — idle background tabs auto-unload to save RAM/CPU, reload instantly when reopened
• Theming — dark/light/custom accent, adjustable browser opacity, backdrop dim, and PiP transparency
• In-game settings menu — everything above, live-adjustable, plus a rebindable hotkey
• Hand-drawn UI — vector icons, hover states, tooltips, soft shadows, eased animations, live tab titles
• Editable config at .minecraft/config/browseroverlay.json
• Graceful fallback — shows a clear error instead of crashing if the browser engine fails to load

Great for

• Looking up wikis, crafting guides, or boss strategies mid-fight without alt-tabbing
• Watching a guide or stream in PiP while you play
• Keeping Discord, a dynamic map, or a claims dashboard one keypress away on multiplayer
• Redstone calculators, palette pickers, and other reference tools for builders
• Streamers running chat/alert overlays without a second monitor
• Browsing during AFK, farming, or travel downtime

Requirements

License

All Rights Reserved © 2026 merenotnoone. Personal use and unmodified redistribution in free modpacks (with attribution) permitted. Modifying, reselling, or republishing source requires written consent — see LICENSE. MCEF/CEF binaries are separate projects under their own licenses.