core-js vs Retina.js
- 53,959
- 333
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core-js is the more common of the two in our index: it runs on 53,959 websites against 333 for Retina.js, and 128 sites use both. Counts come from real scans of each site's home page, not vendor claims, and cover the sites in TechLookup's index rather than the whole web.
core-js is a modular standard library for JavaScript, with polyfills for cutting-edge ECMAScript features.
Retina.js is an open-source script designed to facilitate the delivery of high-resolution images to devices with retina displays.
Within the javascript libraries sites we have indexed, core-js holds 44% and Retina.js 0.3%.
128 sites run both core-js and Retina.js. That is 38% of the sites using Retina.js, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.