A lot of academic journals (say from Springer) also offer HTML formats for papers published in the past decade or so, which I personally often find more conveni

A lot of academic journals (say from Springer) also offer HTML formats for papers published in the past decade or so, which I personally often find more convenient for reading purposes than PDFs. For example, I parse text a lot faster if I use a regex to split each paragraph into sentences and place a linebreak after each sentence, or if I do natural language "syntax highlighting" by assigning a distinctive color to functional words indicating logical structure like 'if/then', 'and', 'or', 'not', 'because', and 'is'. And sometimes it really improves readability to be able to do "semantic highlighting", in the sense of say assigning a different hashed color to each proper name (or each labeled thesis, etc) that occurs in the paper. Such manipulations are basically impossible with PDFs. It makes me wish sci-hub would start archiving HTML versions in addition to PDFs!