Using AngularJS to fetch a base64 image from a file

I have a collection of images, each containing its base64 encoded data within an s3 file.

For example:

The issue arises when trying to directly link to the image like this:

<img src="https://s3.eu-central-1.amazonaws.com/sensicityissues/1483573056505-61946" />

In such cases, the image fails to load.

To make it work, I must utilize the following approach:

HTML:

<div ng-init="vm.loadImage(image, image.url)">
    <img ng-if="image && image.src" data-ng-src="{{image.src}}" width="60" />
</div>

JS:

self.loadImage = (img, url) => {
    $http.get(`http://cors.io/?${url}`)
      .then(r => (img.src = r.data))
}

This method works, but it presents two major challenges:

  • CORS issues, which are currently being resolved with http://cors.io/?${url}. This is not ideal as it slows down image loading and could lead to webpage failure if cors.io becomes inoperative.

  • When using this process for multiple images, all base64 encoded strings remain in memory causing potential memory-related problems.

Is there a better solution to address these concerns without changing the way images are stored in s3?

(Note: The storage format in s3 cannot be altered.)

Thank you for any guidance on this matter.

Answer №1

If you're looking for an example, check out this code snippet on JSFiddle. Additionally, in this thread you can learn how to display base64 images.

<img src="data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO
9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Red dot" />

Keep in mind that using a non-byte response with the http schema won't work for your src attribute value. To display these images in your front-end app, you'll need to set up a backend feature to serve them through a custom URL.

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