If you're looking for an API that lets you store rendered documents in your own S3 bucket for privacy, Doppio is a great option. This API produces high-quality PDF documents and PNG screenshots from HTML without requiring Puppeteer, and it's completely private since it uses a separate context and expires quickly. It also includes S3 storage with presigned URLs, so you can manage your documents yourself. Doppio can be integrated with many technology stacks and includes tools for efficient document generation, debugging and scaling.