composer require dompdf/dompdf

@bsweeney this seems to be incomplete. The following works fine on dompdf 3.1.0:

<div style="background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg')">Test</div>

But it does no longer work on 3.1.3 and 3.1.4.

@Cruiser13 that specific sample rendered OK for me on 3.1.4.

This change addresses an issue parsing data URIs that are part of a stylesheet. Which is maybe where you're encountering an issue? For example, the following does not work in 3.1.4:

<style>
    .bg { background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg'); }
</style>
<div class="bg">Test</div>

I've already produced a fix in relation to #3706 and plan to push a new release in the near future. You can work around that issue by using double quote instead of single quotes

Thanks, it indeed happens on explicit style and not on the element itself. Thank you for the reference to the issue and sorry to bother you!

No worries! Glad to know this was not a different issue than the one identified recently.