The Vishnu Purana (IAST: Viṣṇu Purāṇa) is one of the eighteen Mahapuranas, a genre of ancient and medieval texts of Hinduism. It is an important Pancharatra text in the Vaishnavism literature corpus.The manuscripts of Vishnu Purana have survived into the modern era in many versions. More than any other major Purana, the Vishnu Purana presents its contents in Pancalaksana format – Sarga (cosmogony), Pratisarga (cosmology), Vamśa (mythical genealogy of the gods, sages and kings), Manvañtara (cosmic cycles), and Vamśānucaritam (legends during the times of various kings). Some manuscripts of the text are notable for not including sections found in other major Puranas, such as those on Mahatmyas and tour guides on pilgrimage, but some versions include chapters on temples and travel guides to sacred pilgrimage sites. The text is also notable as the earliest Purana to have been translated and published in 1864 CE by HH Wilson, based on manuscripts then available, setting the presumptions and premises about what Puranas may have been.The Vishnu Purana is among the shorter Purana texts, with about 7,000 verses in extant versions. It primarily centers around the Hindu god Vishnu and his avatars such as Krishna, but it praises Brahma and Shiva and asserts that they are one with Vishnu. The Purana, states Wilson, is pantheistic and the ideas in it, like other Puranas, are premised on the Vedic beliefs and ideas.Vishnu Purana, like all major Puranas, attributes its author to be sage Veda Vyasa. The actual author(s) and date of its composition are unknown and contested. Estimates range of its composition range from 1st millennium BCE to early 2nd-millennium CE. The text was likely composed and rewritten in layers over a period of time, with roots possibly in ancient 1st-millennium BCE texts that have not survived into the modern era. The Padma Purana categorizes Vishnu Purana as a Sattva Purana (Purana which represents goodness and purity).