Instead of the popup and affiliate-link-laden article, you could go right to it: https://digitalcollections.tcd.ie/concern/works/hm50tr726?lo...
which makes one wonder, why even go looking at the book of kells, like, who among the hackernews readership will sit down with an iPad or other high resolution device to peruse the entirety of the book at leisure, inspecting the subtle details of the illumination, taking notes etc.
the book of kell is available both as a facsimile from specialist publishers (/my/ local library has it in extended rotation) and as a 2006 dvd from trinity college library.
but I'm not even talking about that