I've had some success sending a single-page HTML to my Kindle. The Kindle will only accept HTML pages that have no dependencies on external files, i.e., no external CSS, and no external image files, both of which problems can be solved. HTML is obviously nicer than PDF on the Kindle because the text fits the device width automatically.
I've recently had my troff2page converter (https://ds26gte.github.io/troff2page) take a command-line option -r t2pebook=1 (i.e., sets the number register t2pebook to non-zero). When so invoked, troff2page generates a single-page Kindle-suitable HTML file. It works for smallish files, but it seems like the Kindle is very finicky about what kind of HTML it will accept and I'm in the process of tidying it up. Anyway, something to kick around. --d On Thursday, June 10, 2021, 04:11:27 PM EDT, Wim Stockman <wim.stock...@gmail.com> wrote: What is the best and easiest way to convert a groff document to kindle friendly format? or other opensource ereader format , not pdf format? kind regards Wim Stockman