Retina.js

Retina.js is a lightweight JavaScript library that automatically serves high-resolution images to devices with retina or high-density displays. It works by detecting the device's pixel ratio and swapping standard images with @2x versions when available. The library is simple to implement, requiring minimal configuration and working automatically once included on a page. Retina.js helps ensure that images appear crisp and clear on high-resolution screens like Apple's Retina displays and modern smartphones. It supports both inline images and CSS background images, providing comprehensive coverage for visual elements. The library is particularly useful for logos, icons, and graphics that need to look sharp across all devices. Retina.js is lightweight and has minimal performance impact while significantly improving visual quality on compatible displays.