Responsive previews
Check phones, tablets, desktop, TV, and automotive-style screen sizes without leaving Chrome.
Chrome Extension
Responsive testing, closer to real devices.
The CaIoT Responsive Website Tester helps developers, QA teams, founders, and agencies preview pages across common screen types, then open DeviceLab when a real Android device is the next step.
Built For Web And Mobile Teams
Catch layout issues before they reach customers.
Use the extension for quick responsive checks during design reviews, landing page QA, mobile web validation, and release readiness. When screenshots are not enough, continue testing on real Android hardware through DeviceLab.
DeviceLab shortcuts
Open DeviceLab areas such as devices, BYOD, test sessions, app store, and help from the extension.
Real-device workflow
Move from fast viewport checks to real Android sessions when device behavior, permissions, and timing matter.
Simple privacy posture
The extension is designed for the official DeviceLab workflow and does not need to inspect unrelated websites.
Preview
5.0 rating Available on the Chrome Web Store for Chrome users.
Install the extension and keep DeviceLab one click away.
Use it during responsive QA, product reviews, customer demos, and real-device validation workflows.