Browser Zoom cause Display Errors

If you, like me, use a 4K monitor, you probably often use the browser’s zoom feature. With more pixels packed into the same screen size, everything on the interface becomes smaller and more detailed. This also led me to notice a unique issue: the 1px display error caused by browser zoom.

For example, I have occasionally observed this issue in Shadcn UI and Google Search Console. It relates to how browsers handle non-integer pixels after zooming. Since the smallest display unit on the screen is 1px, there will be discrepancies in the final display compared to expectations.

How various browsers should deal with the unsolvable problem of pixel scaling🔗, so there isn’t much that frontend developers can try. I’ve heard that older versions of Chrome tend to make 1px lines disappear after zooming, and there are some workarounds🔗 you can refer to.