CaptionAI is an Artificial Intelligence-powered tool designed to generate automatic image metadata, which includes captions, descriptions, and tags. This metadata aids in improving the accessibility of a website for visually impaired users, enhancing search engine optimization (SEO) rankings, and refining user experience. The tool analyzes images and generates captions and descriptions that accurately delineate the image content. It is particularly beneficial for websites with significant amounts of user-uploaded content, e-commerce websites requiring detailed product image descriptions, and social media platforms aiming to enhance content accessibility. Additionally, CaptionAI facilitates easier image organization through automated tagging and categorization, enabling efficient image retrieval and improved navigation. It provides tools for categorizing uploaded images easily, enhancing user experience with richer search results and making website navigation seamless with optimal image organization. CaptionAI also boasts a robust API feature that allows users to quickly generate relevant image metadata to aid SEO and accessibility compliance, including standards such as the Web Content Accessibility Guidelines (WCAG).