Screen resolution refers to the number of pixels displayed on your screen, typically expressed as width × height. Higher resolutions mean more pixels, resulting in sharper images and more screen real estate for content. However, resolution alone doesn't determine image quality—pixel density (PPI) is equally important.
Common Resolutions
- 1920×1080 (Full HD): Standard for most monitors and TVs
- 2560×1440 (QHD/2K): Popular for gaming and professional work
- 3840×2160 (4K UHD): High-end displays with exceptional detail
- 7680×4320 (8K UHD): Emerging ultra-high resolution
What is PPI?
Pixels Per Inch (PPI) measures pixel density—the number of pixels in one inch of screen. A higher PPI means sharper, clearer images. Apple popularized the term "Retina display" for screens where individual pixels are indistinguishable at normal viewing distances (typically 300+ PPI for phones, 220+ PPI for laptops).