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JavaScript

Deeana Parent
Deeana Parent
1,699 Points
Posted by Deeana Parent
Deeana Parent
1,699 Points

What does this piece of code mean?

<span style="height: 20px; width: 40px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; border: none; background-image: url(&quot;data:image/png;base64,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&quot;); background-color: transparent; background-size: 40px 20px;"></span>

I've been trying to speed up a client's website and I've had a few page speed tests saying about JavaScript render-blocking being a problem. I contacted the creators of this theme for speed options whom reassured me that their code works within favour and to ignore the warnings... I don't understand JavaScript but this huge snippet of code seems a bit much for a homepage? And I also have no idea what could be the background-image.

The fact is, the page is loading too slowly and no Wordpress plugins are fixing the problem.

2 Answers

Thomas Nilsen
Thomas Nilsen
14,957 Points
Thomas Nilsen
Thomas Nilsen
14,957 Points

That long string is just an image converted into a Base64 string. Example can be found here

That shouldn't have a performance impact as far as I know.

Thomas Nilsen
Thomas Nilsen
14,957 Points
Thomas Nilsen
Thomas Nilsen
14,957 Points

Also

If you go here and paste in this (your long string), you'll see the image:

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
Deeana Parent
Deeana Parent
1,699 Points
Deeana Parent
Deeana Parent
1,699 Points

Thanks Thomas. Seems so clear now.