There are multiple versions of the Quran known as qira'at or readings, with around ten recognized canonical versions among Islamic scholars. These come from different transmitters or readers, leading to variations in recitation and slight differences in words, letters, and vowels. In total, there are approximately 30 or more versions circulating today, with over 965 variants in text and some sources mentioning up to 10,000 variants when including all known readings and their variants. The most widely used versions today include the Hafs version (dominant in the Muslim world generally) and the Warsh version (common in parts of North and West Africa). Other recognized versions include Qalun, al-Duri, Khalaf, and more. To summarize:

• About 10 major canonical versions (qira'at) recognized.
• Over 30 different versions may exist considering all recitations and transmissions.
• Several thousand textual variants exist among these versions.
• Hafs and Warsh versions are the most dominant today.

Hence, the "versions" of the Quran refer mostly to these different permissible readings and slight textual variations passed down through oral and written transmission.