Mobile simulator for testing responsive designs across devices. Instantly preview and resize viewports in Chrome.
Users
57
+11 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#104K
#87K among extensions
Version
1.0.1
updated 1 Mar 2026
Users
monthly, 8 months
Latest, 16 Oct 2026:57 usersMove the mouse over the chart for any month
Ratings count
monthly, 8 months
Latest, 16 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About ViewPortify – Mobile Simulator & Responsive Design Testing Tool for Chrome
🚀 Test Responsive Designs Instantly Inside Your Browser
ViewPortify is a powerful and lightweight Mobile Simulator and Responsive Design Testing Tool for Chrome that helps developers and designers preview websites across multiple screen sizes and devices — without leaving the browser.
Quickly simulate mobile devices, adjust custom viewports, and test responsive layouts in real time.
📱 Key Features
✅ Mobile Device Simulation
Instantly simulate popular mobile screen sizes to see how your website looks on smartphones and tablets.
✅ Custom Viewport Resizing
Manually adjust width and height to test any screen resolution. Perfect for debugging responsive breakpoints.
✅ Real-Time Responsive Testing
Preview layout changes live as you resize. No page reload required.
✅ Developer-Friendly Interface
Clean, distraction-free design built specifically for web developers and UI/UX designers.
✅ Lightweight & Fast
Optimized for performance with minimal impact on browser speed.
🎯 Perfect For
Frontend Developers
Web Designers
UI/UX Designers
QA Testers
Agencies testing responsive client websites
Whether you're building landing pages, SaaS dashboards, eCommerce stores, or WordPress websites, ViewPortify makes responsive testing effortless.
🔎 Why Choose ViewPortify?
Unlike complex developer tools, ViewPortify provides a simple, focused mobile simulation experience with quick access to responsive testing controls — all in one click.
No complicated setup.
No external tools.
Just fast and accurate viewport testing.
🛠 Use Cases
* Test mobile-first designs
* Check responsive breakpoints
* Preview layouts before deployment
* Validate UI alignment across screen sizes
* Debug CSS media queries
Growth
Window
Users
Change
Ratings
Rating
7 days
−2
−3.4%
0
0.00
30 days
+11
+23.9%
0
0.00
6 months
+38
+200.0%
0
0.00
Chrome Web Store search rankings
Where ViewPortify – Mobile Simulator & Responsive Design Testing Tool for Chrome appears when people search the store, with the 30 day change