Viewport Size Checker
Live viewport dimensions
Free online viewport size checker with responsive breakpoints.
How to use Viewport Size Checker
- View the size.
- Resize to see updates.
Features
- Live updates
- 5 breakpoints
Frequently asked questions
What is a breakpoint?
A viewport width where the layout changes, e.g. mobile to tablet.
Login to use this free online tool. Create a free account to get started.
