Mobile simulator - responsive testing tool
Extension Actions
- Extension status: Featured
- Live on Store
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
- 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
- Anonymous
- best web extension for programmers that need mobile view
- Anonymous
- Great, wondefull.
- Anonymous
- GREAT!
- Anonymous
- A great extension. Has been very helpful so far.
- Anonymous
- The Best Extension, I've ever seen on the Internet for Responsive Layout, Almost all type of Devices and Ratios were covered in this, easy to understand and well maintained system.
- Anonymous
- best mobile simulator ever
- Anonymous
- Been using for about a year, finally decided to pay for it since it's extremely helpful, and they continually add new devices, such as iPhone 17 suite. I use it on Chrome and Brave. You can't really go wrong, highly recommended.
- Anonymous
- very good and very useful it help me to make resposeve design thank you sooooooooooooooooooooo much
- Anonymous
- wonderfull.........
- Anonymous
- Really appreciate that you made this extension!
- Anonymous
- This product very helpful🔥
- Anonymous
- very good, it helps me alot in my project testings. but you guys should make the iphone 15 free
- Anonymous
- on localhost port.its not working....
- Anonymous
- This extension is extremely useful. Now I do not need to open my phone every time to check the responsive view of any website that I build. Highly recommended.
- Anonymous
- Love this app so much - a must for responsive development.
- Anonymous
- one of the ever best tool for web developers. fast, reliable, real phone ratio. feel same of mobile
- Anonymous
- very good extension very helpful in responsive design.
- Anonymous
- Such a useful app and really nice intuitive design.
- Anonymous
- very useful extension
- Anonymous
- very usefull for webdev
- Anonymous
- Unable to take screenshot
- Anonymous
- Great extension! Very useful for testing responsive screens. It has both free features and subscription options, which makes it flexible. I give it 5 stars.
- Anonymous
- this extension is very usefull. this is working smoothly
- Anonymous
- Super, I recommend
- Anonymous
- This is the best extension so far to test on mobile screens. Sometimes it crashes, I don't the reason for that but still this extension helps a lot.
- Anonymous
- This is the best extension so far to test on mobile screens. Sometimes it crashes, I don't the reason for that but still this extension helps a lot.
- Anonymous
- Greate tool to test responsive web applications
- Anonymous
- It truly is a 5 stars product, I have to say. I hope they make enough money off of it, because the free version has been serving me flawlessly for the last (x) years I've been using it. Have a nice day.
- Anonymous
- thank
- Anonymous
- I am a web developer and this app helps me simulate screens well.
- Anonymous
- Great Extension. Able to check perfectly the screen view of Mobile, Tab & Laptop!
- Anonymous
- An amazing and a must have extension for Frontend engineers.
- Anonymous
- This is a must have for people who are working in digital marketing.
- Anonymous
- Gorgeous app, really useful when doing testing.
- Anonymous
- for me it desers it all
- Anonymous
- Very nice extension and Useful, love this. It is very useful to test different styles in different sizes.
- Anonymous
- Very nice extension, love this. very beneficial to check different designs on different sizes.
- Anonymous
- Very useful!
- Anonymous
- so so good
- Anonymous
- A Great extension!
- Anonymous
- very great for creating applications! Thanks to the creator!
- Anonymous
- good