Mobile simulator - responsive testing tool
Extension Actions
- Extension status: Featured
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.
Latest reviews
- Anonymous
- Amazing extension helps a lot to developers while testing responsiveness loved it...
- Anonymous
- Awesome As F
- Anonymous
- great extension love it
- Anonymous
- good to go
- Anonymous
- Works great, havnt had any issues with this extension. This mobile viewer has helped me in many ways. I have tried so many of the same type of extensions and none of them is as good and reliable as this one. I'll be upgrading soon without a doubt. Thank you for your help, much appreciated!
- Anonymous
- Easy to use, works as it should. I use this extension the most out of all of the ones I have. It's just well though out and executed.
- Anonymous
- excellent tool
- Anonymous
- so damn handy. Works like a charm.
- Anonymous
- helpful
- Anonymous
- working good
- Anonymous
- Game changing for web designers
- Anonymous
- I don't leave reviews often for Chrome Extensions but this one definitely deserves 5 stars. You can create the best, free screen recordings for your app with this. Wow!
- Anonymous
- Great addon! It made my work much easier, I will keep paying for the pro model!
- Anonymous
- iphone ka simulator not give same responsive as in mobile
- Anonymous
- its not working on local file i mean on HTML file
- Anonymous
- useful tool for development UI responsive :)
- Anonymous
- really helpful
- Anonymous
- Perfect for devs
- Anonymous
- literally, quite literally perfect
- Anonymous
- Best extension ever for Responsive!
- Anonymous
- good
- Anonymous
- It works very well and is extremely useful for anyone involved in building and optimizing websites. I highly recommend it.
- Anonymous
- nice app
- Anonymous
- Nice. I just love it.
- Anonymous
- Works perfectly! Great for testing responsiveness.
- Anonymous
- The tool is helpful, but adding more device presets, custom device support, gesture simulation, integrated DevTools, accurate rendering, and screenshot/recording features would make it much more powerful for real-world responsive testing.
- Anonymous
- The best responsiveness testing extension out there.
- Anonymous
- Innovative app and web extension, very handy for any developer to test especially for responsiveness
- Anonymous
- AMAZING! THIS IS WHAT TRUE DEVELOPER NEEDS!
- Anonymous
- Very helpful tool
- Anonymous
- SO far very helpful I can use the direct view of variety of devices
- Anonymous
- Best Extension
- Anonymous
- The video record is the favorite feature!
- Anonymous
- Top
- Anonymous
- So much benificary.
- Anonymous
- Easy to use. Working well. Thanks for making it free.
- Anonymous
- Every few clicks will popup you to buy PRO version, very annoying, uninstalled!
- Anonymous
- I didn't understand if it's free or not?! 🤔 And can we install an Android phone app from the Google Play and use it?
- Anonymous
- This is a really wonderful tool for checking the mobile designs of websites and working on responsiveness. Works wonderfully I highly recommend it. Thank you developer
- Anonymous
- 5 star. I use it for 2 years now for a mobile view of pages for SEO purposes.
- Anonymous
- Absolutely love this tool - I use it everyday. It's superb for demonstrating websites on desktop and mobile in presentations.
- Anonymous
- Best one yet
- Anonymous
- Really helpful and nice. Great!
- Anonymous
- The best tool ever
- Anonymous
- This extension is a lifesaver for mobile screenshots and UI testing!
- Anonymous
- Excellent toolset - I use it every day
- Anonymous
- I love it, simple and straight forward. Credit to the developers. I totally recommend
- Anonymous
- Works perfectly, I can see exactly how my website look on mobile screens & tabs even before deployment. Everything works smoothly & there are always constant updates.
- Anonymous
- very very very very very very useful!
- Anonymous
- Great in Chrome. I do, however, wish it worked in Arc, too.