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About Us

We provide premium content covering various topics and trending stories.
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Supercharge Your Workflow

Experience the next generation of responsive testing. Built for speed, accuracy, and developer productivity.

50K+
Tested Sites
100%
Secure
0ms
Lag Time

Blazing Fast

Instant rendering with zero lag. Test responsiveness in real-time without constant browser refreshing. Optimized for performance.

Pixel-Perfect Sim

High-fidelity viewport simulation for all major devices. From iPhone SE to 4K Desktops, get an accurate preview every time.

Dev-First Design

Clean interface focused on debugging. Supports complex layouts and media queries to ensure your code is bulletproof.

How It Works

Start testing in 3 simple steps.

1

Enter URL

Paste your localhost or live website link in the input field above.

2

Select Device

Switch between Mobile, Tablet, and Desktop views instantly.

3

Analyze & Fix

Spot layout bugs visually and take screenshots for your report.

Need to edit your screenshots?

Our new AI-Powered Image Editor helps you crop, annotate, and enhance your bug reports.

Frequently Asked Questions

Everything you need to know about the tool.

Is this tool truly free?
Absolutely. This tool is 100% free for unlimited use. There are no hidden paywalls, subscriptions, or credit card requirements.
How does it work?
We utilize sandboxed iFrames to render your target URL within specific viewport dimensions, simulating exact device resolutions directly in your browser.
Does it support Localhost?
Due to browser security policies (Mixed Content), you need to serve your localhost via HTTPS or use a tunneling service like Ngrok to preview local sites.
What about my data?
Privacy first. All rendering happens client-side. We do not log, store, or track the URLs you test on our servers.
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