Claude Chat Width Customizer od DoubleGate

More screen. More Claude. Give your conversations room to breathe—expand the chat area from 40% to full-screen width with an intuitive slider or one-click presets. Perfect for ultra-wide monitors and power users who want more from every session.

Key Features:
- Adjustable slider for precise width control (40-100%)
- Quick presets: Narrow (50%), Medium (70%), Wide (85%), Full (100%)
- Real-time preview as you adjust
- Theme support: Light, Dark, or System (follows your OS preference)
- Instant sync across all open Claude tabs
- Sidebar-safe: Only the main chat area changes—navigation stays untouched
- Privacy-first: All settings stored locally, zero data collection

How It Works:
Click the extension icon while on claude.ai, drag the slider or tap a preset, and watch your chat expand instantly. Your preference saves automatically and persists across browser sessions.

Open Source
This extension is free and open source. View the code, report issues, or contribute on GitHub.