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name Punditsdkoslkdosdkoskdo

Display blob (.pdf) in an angular app

I have been trying to display pdf file which I am getting as a blob from a $ response. The pdf must be displayed within the app using <embed src> for example.

I came across a couple of stack posts but somehow my example doesn't seem to work.


According to this doc, I went on and tried...

$'/postUrlHere',{myParams}).success(function (response) {
 var file = new Blob([response], {type: 'application/pdf'});
 var fileURL = URL.createObjectURL(file);
 $scope.content = fileURL;

Now from what I understand, fileURL creates a temporary URL that the blog can use as a reference.


<embed src="{{content}}" width="200" height="200"></embed>

I am not sure how to handle this in Angular, the ideal situation would be to (1) assign it to a scope, (2) 'prepare/rebuild' the blob to a pdf (3) pass it to the HTML using <embed> because I want to display it within the app.

I have been researching for more than a day now but somehow I can't seem to understand how this works in Angular... And let's just assume the pdf viewer libraries out there weren't an option.


First of all you need to set the responseType to arraybuffer. This is required if you want to create a blob of your data. See Sending_and_Receiving_Binary_Data. So your code will look like this:

$'/postUrlHere',{myParams}, {responseType:'arraybuffer'})
  .success(function (response) {
       var file = new Blob([response], {type: 'application/pdf'});
       var fileURL = URL.createObjectURL(file);

The next part is, you need to use the $sce service to make angular trust your url. This can be done in this way:

$scope.content = $sce.trustAsResourceUrl(fileURL);

Do not forget to inject the $sce service.

If this is all done you can now embed your pdf:

<embed ng-src="{{content}}" style="width:200px;height:200px;"></embed>
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