ViewChanger – PC Sites Mobile

Test responsive designs in 10 seconds. Instantly change viewport width from 390px to 3840px and verify PC, mobile, and tablet displays. Dramatically reduce your web testing time.

■ Key Features
• Change viewport width instantly without page reload
• Simulate browser detection with 74 User-Agent strings
• Switch between iPhone, iPad, and desktop resolutions with one tap
• Save up to 10 custom presets for frequently used settings
• Share test results immediately with screenshot feature

■ Perfect For
Web designers spending too much time on responsive checks, frontend engineers streamlining cross-browser testing, QA testers needing multi-device verification, general users wanting desktop sites on mobile, and all web development professionals.

■ How It Works
1. Enter URL to display site
2. Select PC/Mobile/Custom mode
3. Adjust viewport width with slider
4. Change User-Agent as needed

■ Privacy & Security
Your privacy is our top priority. We never transmit your browsing data or personal information externally. All settings are securely stored on your device only.

A professional tool that dramatically improves web testing efficiency.