YouTube Live Chat Overlay

Nico-nico style comment overlay for YouTube live chat. 100% local processing.

YouTube Live Chat Overlay transforms the standard YouTube live chat sidebar into a Nico-nico style flowing comment overlay directly over the video. Watch live streams with chat messages scrolling across the screen — just like Japanese video sharing platforms. ✨ Features: • Four display modes — Right-to-left scroll (classic), left-to-right reverse, top-fixed, bottom-fixed • Rich content support — Text, emoji, Super Chats (with stickers and amounts), membership join messages • Real-time translation — Translate chat messages with dual-language subtitle display or full replacement (Chrome 138+) • Multi-language settings UI — English, 한국어, 日本語, Español, 中文 • Backlog injection — Past messages fill the screen when you join a stream in progress • Depth layers — Messages separate into near/far visual planes based on speed for a 3D-like effect • Author badges — Owner, moderator, and member icons with customizable colors • Full customization — Control speed, font, size, opacity, colors, text outline, safe zones, lane spacing, and more • Settings import/export — Share configuration across browsers or back up your preferences • Cross-tab sync — Settings sync instantly across all YouTube tabs 🔒 100% local processing. Chat content is never recorded, stored, or sent anywhere. All parsing, rendering, and translation happens inside your browser.