How to Adjust Web Design for 1440p and 4K Displays?

Without seeing your site, it's tough to give a precise answer, but as you said, higher resolutions can create extra white space. While scaling text and components can help, you may just have to accept that some space will remain empty. It ultimately boils down to how much the client wants to address different devices. As long as your design is functional and looks decent, it should be okay!

I've found that setting a max width on the main layout helps with white space issues. Scaling font size can assist too, but don’t overdo it. Just keep in mind, on ultra-wide displays, like mine, you might still have sidebars taking up space. If you're feeling adventurous, consider unique layouts like a footer column. But remember, only design for these formats if someone is willing to pay for the extra work!

Definitely consider 1440p and 4K; they matter! I use tools like screenfly.org to visualize how my sites look on various screen sizes. Start with a base rem size for your site’s root, then use em units throughout. Try CSS 'clamp()' for auto-scaling as screens get larger, alongside your media queries. Yes, there's always some whitespace, and adjusting for ultra-wide monitors can be a bit of a rabbit hole, but cover what you can and it gets much easier than before with just media queries!

I always start with small screens for my designs, applying default styles, and then I only add breakpoints when necessary. Using SVG where I can, I've found that resizing is easier, especially when dealing with images. The reading experience doesn't change with bigger screens, so for most sites, I wouldn't crank up font sizes way up just because the screen is larger. Depending on your needs, you might want to max your body width to something reasonable to tackle that whitespace!