Mobile Simulator Responsi

👥 1M+ users

📦 v4.14.11

💾 9.73MiB

📅 2026-03-24

View on Chrome Web Store

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Lets you test mobile responsive websites on your computer with a smartphone and tablet simulator, featuring several models to ensure compatibility across various devices. Ideal for web developers, designers, and marketers who need to ensure their websites adapt seamlessly to different screen sizes. Benefits most those creating mobile-friendly content, particularly in the e-commerce, finance, and travel industries.

Overview

Check the rendering on multiple devices, create impactful client demos, and save time in your testing.

58 devices available (with new ones added regularly)
📱 45 smartphones (old and recent)
💻 5 tablet models
⌚️ 11 special devices (smartwatches, kiosks, computers…)

Main features
🎬 One-click video capture (WEBM, GIF, MP4) for your demos and tutorials
📸 Transparent PNG screenshots, perfect for emails or presentations
🌚 Dark mode for enhanced visual comfort

Also included
➡️ Free downloadable transparent device mockups
➡️ Option to switch to landscape mode
➡️ Zoom just like on a real mobile
➡️ More than 10 customization options (PWA mode, fullscreen, native keyboard, etc.)

Mobile FIRST has been the most powerful and reliable simulation extension for over 5 years.
Our rating on the Chrome Store speaks for itself.

✨ It integrates many technical tricks to reproduce the mobile experience as closely as possible.
Of course, this does not replace testing on a real device at the end of your development for full validation.