The Responsive Screen Tester tool allows you to preview websites on mobile, tablet, and desktop views quickly and securely. Like all SAMAST utilities, it runs entirely in your browser. This means your data is never uploaded to any external servers, ensuring complete privacy and fast execution.
X-Frame-Options header to block being loaded inside iframes for security reasons. If the preview is blank, the site has this protection enabled.100% Client-Side
All Responsive Screen Tester operations happen directly in your browser. No data is ever uploaded to our servers.
Lightning Fast
Powered by modern web technologies, ensuring instantaneous results without network latency.
Secure & Private
Since nothing leaves your device, your sensitive data remains completely secure at all times.
Free & Unrestricted
Use the tool as much as you want without any hidden limits, paywalls, or subscriptions.
Load the Tool
Open the Responsive Screen Tester utility in your browser. The tool works seamlessly on desktop and mobile.
Input Your Data
Provide the necessary input or select the files you wish to process with the Responsive Screen Tester.
Instant Processing
Our client-side engine will instantly execute the preview websites on mobile, tablet, and desktop views operation.
Get Results
Instantly view or download your processed results. Everything stays on your device.
Yes, the Responsive Screen Tester is completely free to use with no hidden limits or subscriptions.
Yes, since SAMAST is a Progressive Web App (PWA) built with client-side technologies, you can use the Responsive Screen Tester offline once the website has loaded in your browser.
Absolutely. All processing for the Responsive Screen Tester happens directly in your browser. Your input data is never sent to any external server, ensuring complete privacy and security.
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