XnView Software

I am a new user of XnView MP 0.35.

I currently have 851 photos in many categories. The XnView.db file is 37526528 bytes! This file grows in size even when I delete photos. For example, I just deleted two photos and this file changed from 35295232 to 37526528. Does this make sense?

that makes 33,66mb
for 851 photos

33,66/851 = 40,5kb per thumb file

I guess u have set the biggest preview with high Quality, so this seems normal to me.
+ It caches all the images it gets, not only the one u fill in your category

Do you have tried to optimize the database?