“Stop resizing that browser, you’re gonna wear it out!” How many times have you heard that one? Well okay, maybe not so many times, but if you develop responsive design web sites, you know what I’m talking about: with every DOM or CSS edit you’re dragging that browser edge back and forth, testing your changes and looking for anything broken. Ultimately, most of this effort is an attempt to emulate
![How to test responsive designs for free](https://cdn-ak-scissors.b.st-hatena.com/image/square/e5ad6cdf125b20dd1150dd5587e0c789abc7c0d0/height=288;version=1;width=512/https%3A%2F%2Fwww.webdesignerdepot.com%2Fassets%2Fposts%2Ffeatured%2F_1200x630_crop_center-center_82_none%2F54961%2Fwdd.jpg%3Fmtime%3D1676929111)