I downloaded the rpm just now and got an error regarding gpg keys.
(I did try the standard command sudo zypper in tesseract-ocr this morning.) It seemed to install but when I tried to run it, nothing happened?? So, I removed it.
After posting here I tried the command again; it’s working now.
As I mentioned above I tried one of the auto-install links which proved to be dead now. (I generally prefer manual installs.) Again, tesseract is working now.
The links you posted seem to be ok. I have been using tesseract from the command line for years; I like it.
Perhaps next time I fresh install Suse I’ll try one of your links, and maybe I’ll add a gui front end.