p4guru
Well-known member
For chrome users, resolution test extension https://chrome.google.com/webstore/detail/resolution-test/idhfcdbheobinplaamokffboaccidbal1024x768. If you are on Windows, you can use a tiny portable program that sets your browser window to whatever size you like. I use it since last 10 years, as I like to have my windows perfectly sized to specific sizes.