[davidfor]

Originally Posted by compurandom

I didn't ignore the SVG test. It wasn't useful.
It flags a significant portion of my library and almost everything it flagged didn't need fixing. The removable/non-removable tests found 101 books. The svg test found 250 *different* books which didn't have problems.

And my issue was that you didn't bother to mention that. From your reply, you had completely ignored this suggestion. All you needed to do was include the above statement and I wouldn't have needed to waste my time wondering why you were concentrating on the part of my suggestion that I honestly thought would be the most useless.

That's not really a solution either, as some of the books had unmarked covers and polish books would have added a second cover.

Yes, that can happen. But, my experience is that it is rare.

Now, if I could search for books without a cover page but with a cover image, then all of *those* I could have just run polish on. This is really the only case that is trivial to fix.

At the moment, I feel like you are wasting your time worrying about this. Unless you feel like writing the update to Quality Check to do the detection, my suggestion would be to bite the bullet and do the Polish for all the potentially problem books. Yes, you will process some books that are OK, but the cover will be the calibre version and you know this will not cause issues. And you will get two covers on a few. But, you won't see any books with the messed up first file after sending the book as kepub to the device. Overall, your reading experience will be improved. And on those (I think) rare books that do get two covers, they can be fixed with a lot less trouble than what you are doing now.

But, I suppose that you could do the Polish and compare the file size of the original with the new. If they are similar, the extra cover probably wasn't added. If there is a bigger difference, it probably was. Of course, there are probably so many problems with this method that it isn't worth considering.