title: Read a file as binary data in JavaScript on the client side
body: <p>As the question states, I'd like some way to read files on the client side using JavaScript (is there any other possible alternative?).</p>
  
  <p>These files(images mostly) are part of the webpage, and so I do not need access to the filesystem.</p>
  
  <p>So basically my question should reduce to, is it possible to open a file in binary mode in JavaScript and read it byte by byte?</p>
  
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  <p>There seems to be some confusion as to what I'm trying to achieve.
  The question <a href="https://stackoverflow.com/questions/1095102/how-do-i-load-binary-image-data-using-javascript-and-xmlhttprequest">How do I load binary image data using Javascript and XMLHttpRequest?</a> deals with the case when the user is actually able make his own requests to the server and set his own mime-types etc.</p>
  
  <p>I wish to create a js function/script that reads the already loaded files on the web-page as binary, for the purposes of meta-data extraction.</p>