Psd to Html conversion engine is able to determine image layers which can be saved in jpeg format for a long time. It saves such layers as .jpg images automatically.
We added a possibility to forcibly export image layer in jpeg format even if layer has transparent pixels – just add #jpg tag to the layer’s name. In this case transparent pixels will be merged with underlying background. Resulting image will have no transparent pixels and it will match with the surrounding background. Please, note that this feature should be used with caution because with high probability you will not be able to use this image with another background.