Drop your HTML file here or click to browse
Supports .html and .htm filesNo Preview Yet
Enter a URL or upload an HTML file to preview how it looks on different devices.
Getting Started
Enter a URL in the input field or upload an HTML file to preview it. Select a device preset or enter custom dimensions to see how the page looks at different screen sizes.
Device Presets
Choose from popular device sizes including iPhone models, iPads, Android phones, laptops, and desktop monitors. Each preset automatically adjusts the preview viewport to match the real device dimensions.
Custom Resolution
Enter any width and height values to test specific viewport sizes. This is useful for testing breakpoints or unusual screen sizes not covered by presets.
Limitations
Many websites block iframe embedding for security (X-Frame-Options, CSP). If a URL doesn't load, save the webpage as a complete HTML file and upload it instead. HTML files always work reliably.
Privacy
All processing happens in your browser. Uploaded HTML files are read locally and never sent to any server. Your data stays private.