"this is just your, developer's job"
Shockingly, it's not. Most places I know of are moving away from a the designer and frontend developer positions. It's a big cost savings, not just in salary but in cycle time as well. Our designer sends us his designs in HTML. There is no bickering over fonts, no pixel perfection, no stupid photoshop-isms -filters, drop shadows, embossing, etc. I'm pretty sure he doesn't even have photoshop.
If you're a web designer and you can't do this, it's time to learn. You're a theoretical web designer drawing pictures of websites.