Mobile simulator - responsive testing tool
by Mobile FIRST
Quick Look
This extension allows developers and designers to test responsive websites across a wide range of smartphones and tablets directly in their browser.
AI Overview
Who is this for?
Web developers, designers, and testers who need to ensure their websites look and function correctly on various mobile devices.
Key Features
- → Simulate 58 different devices (smartphones, tablets, smartwatches)
- → Capture video demos (WEBM, GIF, MP4) and transparent PNG screenshots
- → Offers dark mode and landscape orientation
- → Provides downloadable device mockups
Reviews Analysis
Overall Sentiment
Overwhelmingly PositiveUsers highly praise the extension for its extensive device selection, ease of use, and valuable features for responsive testing, making it a reliable tool for web developers.
Note: AI analysis focuses on the substance and recency of reviews, which may differ from the overall store rating.
What Users Love
- ✓ Wide variety of device simulations available
- ✓ Useful features like video capture and transparent screenshots
- ✓ Consistently reliable and powerful for over 5 years
Points to Consider
No specific cons identified.
Official Description
From the Developer
Smartphone and tablet simulator on computer with several models to test mobile responsive websites.
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.
Your extension? Let us know if we can update or correct anything!
Key Info
-
Rating:
4.9/5.0
(4K ratings)
- Users:1,000,000
- Version:4.11.1
- Updated:Oct 22, 2025
- Developer:Visit Website →
Stats from Chrome Web Store
