The problem is that you have an oblong (wide) image being used on an upright (narrow) cover. So if you want the maximum amount of the image on the cover, you'll only get about 1/3
pf the original image to fit into the upright size. The blue lines represent the trim size of the book ( 6 wide X 9 high):
You would need to choose which part of this image you want to appear on the cover.
If you scale the image down, you reduce both the height and the width.
Unless I'm completely off base here...
Gurus - I'm having trouble scaling and outputting the final image. I'm also getting "generator" errors in PS which may be the problem.
Can someone please jump on this so the OP isn't abandoned? Trying to work out these technical issues in the meantime....
I think I got it.
There's a PNG version/300ppi for print and a jpg version/72ppi for ebook/web. Trims are 6-1/4 X 9-1/4 to allow for bleeds.
I hope this works for you - let me know if a problem.
I know the pain of having to choose between a part of the image you liked for the cover just so it fits proportion, and wanted to avoid that. When I tried finding a similar image on the net I found a better resolution one that scales in proportion to 6"X8". I just dragged the image horizontally 1" to suit the desired proportion hoping the now distorted horizontally oblong image does not appear skewed. I then added a 1 inch trim on all sides as shown here.
Your full image (300 PPI) is here:
Original image that scales in proportion to 6"X8" (72 PPI) is here:
You have an alternative too - an image that is similar appears on Getty Images and its number is 1176551041 if you want to purchase it at full resolution.
Note: If your book is Portrait, as in 9" is the height and not width, then of course all the above images will not help.
@polarwoc - standard is usually width X height. So 6 X 9 would be 6" in width X 9" in height.
The landscape version you proposed would work for what we would call a 2-page spread - or wraparound - in printing. Plus the spine if a book.
I believe the OP was only looking for the front cover so the portrait size (6X9) would be the choice. In print, would be called an upright.