html5 - Convert Image to Binary Data or String in Javascript -

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i working on uploading image file twitpic using xmlhttp request on chrome extension . need send image payload. there way ? found link convert image binary data in javascript works on image tags. need way specify image file path , upload image twitpic.

i came know filereader api html 5. there way work using that??. should work on local file.

does chrome extension support filereader api without running localhost server ??

i found answer myself. chrome extensions support filereader api of html 5. code below works simple.

  var reader = new filereader();   reader.readasdataurl(f);

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