Mobi-Sim

Preview websites in realistic mobile device frames instantly.

Mobi-Sim is a powerful and easy-to-use Chrome extension that lets you preview any website inside real mobile device frames — iPhone, Android, and more — without leaving your browser. Features include: Realistic device frames with status bars and orientation support. Drag, scale, and rotate devices to match any screen size. Quick URL input for instant preview of your projects. Customizable background colors and toggleable device backdrops. Supports all modern websites with live updates. Whether you’re a web developer, designer, or hobbyist, Mobi-Sim helps you see exactly how your site will look on mobile devices — saving time and giving you confidence in your designs. Why Mobi-Sim? No more guessing or switching devices — preview directly in Chrome with full control. Perfect for testing responsive layouts, debugging mobile-specific styles, or showing clients realistic mockups.