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
- 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.
- Anonymous
- so so so helpful.
- Anonymous
- the best to ever made>>>
- Anonymous
- have to say ... the easiest realtime way of finding out if your code works on mobile devices. have used browserstack and other apps in the past, but they are cumbersome and not always a true validation due to their vm's not being updated. nicely done.
- Anonymous
- Really Good and helpful while trying to test and build apps. Lovely extension!!!
- Anonymous
- Awesome, i used this extension and it helps me as a developer to check if website i built are fully responsive, cant wait to try the premium version
- Anonymous
- best one
- Anonymous
- When I'm want to scroll in the extension sidebar open it not working. I hope you guy's will fix this. ASAP
- Anonymous
- very interesting plugin. thanks.
- Anonymous
- Best mobile viewer extension I found
- Anonymous
- Whoever build this extension. I deeply send you my sincere gratitude. You are working for humanity. God bless you, my friend.
- Anonymous
- Nice emurator, keep it up guys! 😁
- Anonymous
- Excellent extension to see the mobile viewport. i use it all the time.
- Anonymous
- easy and useful
- Anonymous
- pretty good
- Anonymous
- good help
- Anonymous
- i really enjoy using this extension, it helps alot, especially for a frontend dev like myself
- Anonymous
- very beatiful and usefull plugin
- Anonymous
- Really amazing extension. Makes it easier to test responsiveness
- Anonymous
- it's very very good!
- Anonymous
- This is th best of its kind
- Anonymous
- It is good for my responsiveness testing for my project website.
- Anonymous
- Amazing Work
- Anonymous
- YOU NEED THIS APP!!!!! It's such an amazing tool for writing css!! for my website to make it more responsive! Thank you so much for making many options free!!!
- Anonymous
- Absolutely love this. Made testing responsiveness on different devices an absolute breeze. Love the realistic look of the test device renders as well.
- Anonymous
- Very helpful
- Anonymous
- Good app and easy to use.
- Anonymous
- Pretty good
- Anonymous
- Best!!!
- Anonymous
- perfect
- Anonymous
- excellent, helps me with building websites. well done and thank you.
- Anonymous
- Makes responsive website checks so easy!
- Anonymous
- awesome extension. if only there were more devices on the free varsion. :)
- Anonymous
- This is very nice Extension for sure.
- Anonymous
- The best tool
- Anonymous
- This extension is Awesome .... a real game changer .
- Anonymous
- it is not opening on localhost so what's the usefulness