A virtual teacher who reveals to you the great secrets of Base64

ICO to Base64

Convert ICO to Base64 online and use it as a generator, which provides ready-made examples for data URI, img src, CSS background-url, and others. The ICO to Base64 converter is identical to Image to Base64, with the only difference that it forces the mime type to be “image/x-icon” (even if the uploaded file has a different content type or it cannot be detected). Please note that the ICO to Base64 encoder accepts any images types with a size of up to 50 MB. If you are looking for the reverse process, check Base64 to ICO.


How to convert ICO to Base64 online

  1. Choose the source of image from the “Datatype” field.
  2. Paste the URL or select an ICO image from your computer.
  3. If necessary, select the desired output format.
  4. Press the “Encode ICO to Base64” button.
  5. Download or copy the result from the “Base64” field.

About ICO

  • Name: Windows icon
  • Developer: Microsoft
  • MIME types: image/x-icon, image/vnd.microsoft.icon
  • File Extensions: .ico
  • Uniform Type Identifier: com.microsoft.ico
  • Type of Format: Raster graphics

Output formats

If you do not know what output format you need, check the following examples to see how will look the result of the same Base64-encoded ICO image formatted in each of the available formats (as an example image I use a one-pixel red dot ICO file):

Plain text:
AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA==
Data URI:
data:image/x-icon;base64,AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA==
CSS Background Image:
.base64 {
  background-image: url("data:image/x-icon;base64,AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA==")
}
HTML Favicon:
<link rel="shortcut icon" href="data:image/x-icon;base64,AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA==" />
HTML Hyperlink:
<a href="data:image/x-icon;base64,AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA=="></a>
HTML Image:
<img alt="" src="data:image/x-icon;base64,AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA==" />
HTML Iframe:
<iframe src="data:image/x-icon;base64,AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA==">
  The “iframe” tag is not supported by your browser.
</iframe>
JavaScript Image:
var img = new Image();
img.src = "data:image/x-icon;base64,AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA==";
document.body.appendChild(img);
JavaScript Popup:
window.onclick = function () {
  this.open("data:image/x-icon;base64,AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA==");
};
JSON:
{
  "image": {
    "mime": "image/x-icon",
    "data": "AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA=="
  }
}
XML:
<?xml version="1.0" encoding="UTF-8"?>
<root>
  <image mime="image/x-icon">AAABAAEAAQEAAAEAIAAwAAAAFgAAACgAAAABAAAAAgAAAAEAIAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAAAAA==</image>
</root>

If I missed an important output format for Base64-encoded ICO images, please let me know — I would love to implement it.

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I will be happy to read every comment and, if necessary, I will do my best to respond as quickly as possible. Of course, spammers are welcome only as readers.

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