Screen Resolution Simulator

About This Tool

So, I built this thing called the Screen Resolution Simulator. Honestly, it started because I got tired of guessing how my designs would look on different screens. You know how it is—you code something on your 4K monitor, then open it on a phone and it’s like, “What even is this layout?”

This tool just lets you see your site or app at different resolutions. No fluff. No fancy marketing jargon. You pick a size, it resizes the viewport, and you get a rough idea of how things stack up. It’s not perfect, but it’s way better than squinting at your phone while holding it at arm’s length.

Key Features

• Quick presets for common devices—phones, tablets, desktops. Saves time.
• Custom resolution input. Because sometimes you need 1366x768 exactly.
• Real-time resize. Drag the corner and watch it adjust. Feels kinda satisfying.
• No install needed. It’s all in the browser. Just open and go.
• Dark mode toggle. Because staring at bright screens at 2 a.m. is a crime.
• Bookmarkable URLs. Share a specific resolution with your team without explaining it twice.

FAQ

Does this actually test responsiveness?
Not really. It simulates the viewport size, but it won’t catch every CSS quirk or media query bug. Think of it as a first-pass check—like a smoke test for layout. You’ll still need real devices or browser dev tools for the nitty-gritty.

Why not just use Chrome’s device toolbar?
You absolutely can—and you should for serious testing. But sometimes you just want to glance at something fast without opening dev tools, switching tabs, or dealing with emulated touch events. This is lighter. Simpler. Good for quick checks when you’re in the zone.