file-type
Detect the file type of a file, stream, or data
lazysizes
High performance (jankfree) lazy loader for images (including responsive images), iframes and scripts (widgets).
srcset
Parse and stringify the HTML `<img>` srcset attribute
blueimp-load-image
JavaScript Load Image is a library to load images provided as File or Blob objects or via URL. It returns an optionally scaled, cropped or rotated HTML img or canvas element. It also provides methods to parse image metadata to extract IPTC and Exif tags a