# How Big Is My Browser?

> A free, single-page tool that displays your browser window and viewport size in pixels, updating live as you resize the window. Built and maintained by 3 Media Web.

Useful for checking browser or viewport dimensions when testing responsive designs, verifying CSS breakpoints, or reporting the exact window size in bug reports. No signup, no tracking of dimensions — just open the page and read the numbers.

## Site

- [How Big Is My Browser?](https://browser-check.3mediaweb.com/): The tool itself — shows live viewport width and height in pixels as you resize.

## About

- [3 Media Web](https://www.3mediaweb.com/): The digital agency that built this tool.