File — Web platform APIs

File and data manipulation tools. Handle files, read data and work with binary content.

Blob — A file-like object of immutable, raw data. Blobs represent data that isn't necessarily in a JavaScript-native format. The File interface is based on Blob, inheriting blob functionality and expanding it to support files on the user's system.
BlobPart
BlobPropertyBag
EndingType
File — Provides information about files and allows JavaScript in a web page to access their content.
FilePropertyBag
FileReader — Lets web applications asynchronously read the contents of files (or raw data buffers) stored on the user's computer, using File or Blob objects to specify the file or data to read.
FileReaderEventMap