VIEWPORT CHECKER

Your screen size, pixel ratio, and responsive breakpoints — live
Responsive Breakpoints
Common Device Sizes

Related Dev tools — Meta Tags, CSS Gradient, Aspect Ratio, Image Resizer.
📖 Guide: Essential Dev Tools

FREQUENTLY ASKED QUESTIONS

What is a viewport size?
The viewport is the visible area of a web page in the browser. This tool shows your current viewport dimensions and common device sizes.
Why does viewport size matter for web design?
Responsive designs adapt to different viewport widths. Knowing common sizes helps you test layouts for phones, tablets, and desktops.
What is the difference between screen resolution and viewport?
Screen resolution is the full display size; the viewport is the browser’s visible area, which is smaller due to toolbars and scrollbars.