Several academic and community-driven platforms offer the text for free: Sanskrit Documents (SanskritWeb): Offers a clean, standardized PDF of the Dhatupatha that is widely used in academic circles.
, providing the "elemental sounds" from which all Sanskrit verbs and nouns are derived. www.sanskritdictionary.com 1. Key Features of Dhatupatha PDFs dhatupatha pdf
This is the most learner-friendly version. Dhatu Deepika provides the root, its class, voice (Atmanepada/Parasmaipada), and a clear English/Hindi meaning. and a clear English/Hindi meaning.