Responsive Website Tester Tool — it allows users to enter a website URL
Here’s a complete responsive code for a Responsive Website Tester Tool — it allows users to enter a website URL and preview it in multiple screen sizes (mobile, tablet, desktop, custom). It includes colorful styling, responsive layout, and uses no API key.
You can copy and run this code directly in any browser.
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🌐 Responsive Website Tester Tool
🌐 Responsive Website Tester Tool
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🌈 Features:
✅ Fully responsive layout (works on all devices)
✅ Colorful gradient UI design
✅ Test any site by URL
✅ Device presets — Mobile, Tablet, Desktop, Full Width, Custom
✅ Smooth transitions and stylish buttons
✅ Works offline (no API or external dependency)
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Would you like me to add a live device frame preview (iPhone / iPad / laptop frame look) using a free CSS frame library (like Devices.css)? It will make the tester look even more realistic.
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