If you seek scans for personal study (and own the physical book as backup under fair use arguments), look for:
In recent years, official digital versions of the artbooks have become more widely available, providing fans with a convenient and legitimate way to access the artwork. This shift towards digital distribution not only ensures that fans can enjoy the artbooks while respecting the creators' rights but also allows for a more immersive experience with features such as zooming in on artwork and reading annotations. naruto artbook scans