Maps and More: Visual Annotation of EPUB books

My recent reading list included several books which shared the same feature: there was a lot of historical geography inside. Not that the historical geography was the subject of any of them, but the series of unfamiliar and half-familiar place-names were long enough to get lost in. Still, though all of them were in this or that electronic format, the situation was no better than with paper books: either there were a few pictures with maps inserted as usual illustrations or, in worse cases, there were no maps at all. So, I want to talk about that a bit.

I will not discuss here the cases where a big and complex and detailed map is needed, such as in J.R.R.Tolkien’s books; It’s a serious matter as well, but it’s a different matter.

Maybe sooner or later a dedicated solution will appear in EPUB for custom maps. Sure, maps can be tolerably implemented using images, especially vector images; but so can formulas, and still we have MathML; history books (which need custom maps more often then not) are no worse then maths books after all. Continue reading Maps and More: Visual Annotation of EPUB books

What image formats are suitable for ePub?

A question posted over on the ePub Community Group was asking what image formats are suitable for use in ePub.

As Jon Noring replied, the OPS 2.0 Specifiaction says that an OPS (ePub) Reading System must support the GIF, PNG, JPEG and SVG image formats.

These are pretty standard formats to be supported so I don’t see any problems with rendering these. But I do have some concerns regarding SVG – these of course stem form having absolutely no clue at all about the format!

Still, I am wondering if there will be any issues when rendering SVG, akin perhaps, to what we had during the browser wars.

Is there anyone out there who understands SVG and can shed some light on this matter?