Screen Resolution Simulator

About This Tool

Alright, so I built this thing because I was tired of guessing how my designs would look on different screens. You know the drill—you build something on your 4K monitor, then open it on a phone and it’s like, “What even is this?” That’s where the Screen Resolution Simulator comes in. It’s not fancy. No AI magic, no subscriptions, no “revolutionary breakthroughs.” It’s just a simple tool that lets you see how your website or app looks at different screen sizes. Think of it like a quick reality check before you push something live.

Key Features

• Instant preview across common resolutions—desktop, tablet, mobile, you name it.
• Drag-and-drop URL input. Just paste your link and go.
• Side-by-side comparison mode. See two resolutions at once without flipping tabs.
• Custom resolution input. Got a weird 1366x768 kiosk? Throw it in there.
• No tracking, no cookies, no nonsense. Your site stays yours.
• Works offline after the first load. Great for testing on the go.

FAQ

Does this work with local development servers?
Yeah, as long as your local server is running and accessible. Just make sure you’re on the same network if you’re testing from another device. I’ve used it with localhost:3000, localhost:8080, all that jazz. No extra config needed.

Why not just use browser dev tools?
Look, dev tools are great. But sometimes you want to see the whole page, not just a cropped viewport. Plus, this thing remembers your last few tests and lets you compare them visually. It’s not better—it’s just different. Use whatever saves you time.