Please, can you point me to the link from which I could fetch the HTML or pdf version of the new documentation, I couldn’t find it easily? I could only find that for “Topical Manuals” at Topical Manuals - ROOT
Maybe @couet can give more details, but you can download the whole html Reference Guide in the download directory (e.g. html626.tar.gz), but not the documentation AFAIK
Take a look at the QCH file provided here: All Reference Guides - ROOT It contains the whole HTML documentation in one file. (The reference guide, not the manual though)
You can then open it “offline” with qt-assistant and you can search on it, etc.
The Manual is HTML only. It is written in markdown/jekyll etc … there are some interactive plots in it also. I am not aware of some automatic tool able to translate such documents into pdf. If we find one easy to use we can consider producing a pdf version of the manual.