I might be way o the ball here (it has been known once in a while lmao), are you using this image in a website designed by Xara? If so I would simply lay the text over the image then dont export it as a JPG, I have noticed that text does seem to suffer a bit with blurring round the edges when it is exported as a JPG.

I believe the sotware will still export a text effect as an image but it seems to do it better if you let it do it itself upon "export website" rather than exporting it yourself then adding the image back in.

Hope that makes sense, it may just be a config my end but as said whenever I have exported text as a JPG I too have noticed blurriness.

It similar to my LCD tv at home it drives me insane I have SKY HD and normal channels upscaled via HDMI show a blurr around certain images and text really annoys the hell out of me never had it with my old size of a fridge rear projector

ha ha ha

hope that helps

Chris