There isn't one that I'm aware of ... yet.

That said, the raw data is available through an S3-compatible service, here: https://osdc.rcc.uchicago.edu/noaa-goes16

With documentation about how to navigate and use the files here: http://edc.occ-data.org/goes16/getdata/

So it would be possible to script together something that cooks out a nice high-rez full disc image every 15 minutes.

For fun, here's one of the full disc frames we cropped in from:

https://d1ax1i5f2y3x71.cloudfront.net/items/0J2g1S1y2f2D1y0W...

Note that even though its 2712x2712 pixels, that's still way smaller than GOES16's potential resolution. The highest rez versions of this image that I've encountered go over 10,000 by 10,000...