HeyGen is an online tool that uses artificial intelligence to create videos from text, templates, or short footage. It lets you choose or create lifelike avatars that speak your script in a natural voice. You can translate videos into many languages with high quality, and even export in 4K resolution on higher plans. The platform is designed for marketers, educators, solopreneurs, and teams who need fast, repeatable video production. HeyGen also includes security testing and integrations so businesses can use it securely and at scale.