Image upload preview using my JQuery Upload Plugin

Adding a simple image preview during the upload process can be easily done by doing some tweaking to my Upload Plugin demos.

Here is the modified demo:

The magic happens on onNewFile(id, file); our new file callback recives an HTML5 File object as parameter which can be used with the FileReader to accomplish our goal.

The code is very self explanatory:

onNewFile: function(id, file){

      // Checks if this feature if availabe to the user
      if (typeof FileReader !== "undefined"){
        var reader = new FileReader();

        // Our  object
        var img = $('your-image-dom-object');

        reader.onload = function (e) {



Modern browsers like Chrome/Firefox or IE10 support this feature; which is enough since those are also my uploader plugin requirements.

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