Image becomes blurry after exporting as JPEG from Illustrator

[Jenn5E38]

I have an image in illustrator that I am trying to save as a JPEG. The file will be uploaded so people can purchase and then print themselves for framing. JPEG is the most popular digital download, so I would like to keep this file type however PDF is a less than ideal option B. The file is crisp when I zoom in on illustrator, but becomes blurry when I save as JPEG. My saving settings are CMYK, high image quality, Baseline (standard) compression, higher (300DPI) resolution, and art-optimized (supersampling).

Any suggestions on how to fix this would be really appreciated. Let me know any additional information you need.

[Monika Gause · Accepted solution]

JPEG is a raster image. Of course it's blurry when you zoom in.

[Jenn5E38]

Thanks for the constructive comment...

[Bryant339101992gok]

could you be any ruder?  

[Test Screen Name]

You don't seem to understand the basics. All I can do is repeat; Don't zoom over 100%. 

[Larry G. Schneider]

And remember that a CMYK JPEG is not supported by many software.