This "flash converter" does not read the flash file but
rather converts the content to some unreadable format.
The content owner presumably allows that. And we are
not
violating Adobe's rights, since they have no rights to the
content.
We then provide an HTML5+js gibberish player that
uses
the content to present an animation, in a way that is
different from Adobe player, for example playing the
animation backwards. The user may choose to play it
forward if they wish to do so.
And so you get to view the book of Almagest animations
or
other Flash content from any website.