You could use Base64 encoding
As an example, if I was to use my logo at SpinCitySlots.com
The Base64 coding would be:
Code:
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
Want proof...sure... copy the above code to a Base64 decoder, such as: https://codebeautify.org/base64-to-image-converter
Will convert it back to the (logo) *.png
Edit:
You can either add Base64 inline, or use it in CSS. Either way, it's far quicker/faster than pulling multiple images. Hence, page load speeds are greatly increased