(a "legacy" edition) typically focuses on making these static documents interactive and usable for modern tabletop play.
– Free app with 7th Edition data repositories. You can build armies without owning the full Codex text. Warhammer 40k 7th Edition Codex Pdf
or fan-run repositories host PDFs uploaded by users, though these are unofficial. Complete List of 7th Edition Codices (a "legacy" edition) typically focuses on making these