Test your website on mobile, tablet, and desktop instantly while making real-time changes. The only responsive testing tool that lets you edit and preview simultaneously.
Unlike standalone testing tools, SimpleWYSIWYG combines responsive preview with live editing capabilities, making it the most efficient solution for mobile-first development.
Instantly see how your website looks on mobile, tablet, and desktop devices simultaneously. Real device dimensions and behaviors.
Make changes to your HTML/CSS and see instant updates across all device previews. No refresh needed, no lag time.
Test breakpoints, media queries, and responsive behavior instantly. Identify and fix mobile issues in real-time.
Start testing immediately without downloads, installations, or account creation. Works directly in your browser.
Export your responsive designs as clean HTML/CSS or share live previews with team members for instant feedback.
All device previews update simultaneously when you make changes. See exactly how your edits affect different screen sizes.
Most responsive testing tools only show you previews. SimpleWYSIWYG lets you test AND edit simultaneously, making your mobile development workflow 10x faster.
| Feature | SimpleWYSIWYG | BrowserStack | Am I Responsive | Responsively |
|---|---|---|---|---|
| Multi-Device Preview | ✓ Built-in | ✓ Yes | ✓ Yes | ✓ Yes |
| Live Code Editing | ✓ Yes | ✗ No | ✗ No | ✗ No |
| Click-to-Edit Elements | ✓ Yes | ✗ No | ✗ No | ✗ No |
| Real-time Updates | ✓ Instant | Preview only | Preview only | Preview only |
| No Signup Required | ✓ Free | ✗ Paid only | ✓ Yes | Download req. |
| Export Clean Code | ✓ HTML/CSS | ✗ No | ✗ No | ✗ No |
| Cost | $0/month | $29+/month | $0/month | $0/month |
Whether you're a freelancer, agency, or in-house developer, SimpleWYSIWYG streamlines your responsive design process.
Show clients exactly how their website will look on different devices while making adjustments in real-time during presentations.
Accelerate your design-to-development workflow by testing and refining responsive layouts before final implementation.
Teach responsive design concepts with hands-on examples. Students can see immediate results of their code changes.
See what developers are saying about SimpleWYSIWYG's mobile preview capabilities
"Finally, a tool that lets me test AND edit responsive designs at the same time. This cut my mobile development time in half!"
"The click-to-edit feature combined with multi-device preview is a game-changer. Much better than switching between BrowserStack and my editor."
"Love that it's completely free and works instantly in the browser. No more expensive subscriptions for basic responsive testing."
Everything you need to know about our mobile website preview tool
Unlike tools like BrowserStack Responsive or Am I Responsive that only show previews, SimpleWYSIWYG lets you edit your HTML/CSS and see changes instantly across all device sizes. It's testing and development combined in one tool.
No! SimpleWYSIWYG works entirely in your browser. Just visit the website and start testing immediately. No downloads, no registrations, no setup required.
We support all popular device sizes including iPhone, Android phones, iPads, tablets, laptops, and desktop computers. You can also test custom screen resolutions and orientations.
Yes! You can export clean, production-ready HTML and CSS code from your responsive designs. You can also share live preview links with team members or clients.
Yes! SimpleWYSIWYG is completely free to use with no limitations on testing or editing. We believe responsive design tools should be accessible to everyone, not just enterprises with big budgets.
Updates are instant! As soon as you make a change to your HTML or CSS, all device previews update simultaneously with no lag. It's truly real-time editing and testing.
Join thousands of developers who've already discovered the power of simultaneous editing and testing. Start building better responsive websites today.