Convenient format for e-books?

Question

Books

Good day. In what format is it more convenient to read technical literature (programming) on ​​a smartphone? To make it possible to increase the font, there were illustrations. So that when the font is increased, the words are automatically wrapped to a new line.

Answer 1

Technical literature, due to the abundance of illustrations, code examples, diagrams and other similar inserts, has to be read only in PDF / DJVU. But then forget about line wrapping.

Answer 2

For technical literature - the universal answer is epub, epub3 is even better. Why not fb2 - with fb2 formatting - bad. In second place is pdf (because a copy of the printed layout usually will not be hyphenated, unless the book is made up with reflow support - but then if you use reflow, formatting can go).
But there are features:
What NOT to do is to convert the book to other formats (except for converting fb2 to something else, for fb2 this is the norm). If there are still reasons to convert (well, for example, the need to read from a small tablet) and there is no epub / pdf with reflow - then take Finereader in batch mode (in no case use the built-in Caliber converter, or various popular one-click conversion sites. )

Answer 3

FB2 - he was invented for this.

Answer 4

One HTML and everything is inline in it - one file and all resources - inside.
Schemes - exclusively in SVG (also inside this single HTML).