The library supports all major browsers including Chrome, Firefox, Safari and Internet Explorer. Internet Explorer 9 requires polyfill for
matchMedia implementations. For picture support, we are recommending to use picturefill version 3. Pixboost-js has integration with it and will call
window.picturefill() once replacements are done. For matchMedia, we highly recommend matchMedia.js.
Lazy loading is using Intersection Observer feature that supports by all major browsers except for Safari. You can use polyfill, but make sure that you are doing thorough testing (see more details in lazy loading section).