The open-source library web-ai enables developers to run modern deep learning models directly in the browser or Node.js. It offers a way to integrate AI capabilities into web applications without the need for complex server-side infrastructure or reliance on third-party APIs. The key goal of web-ai is to make AI on devices accessible to any JavaScript developer. It utilizes ONNX Runtime for high-performance neural network model inference and supports caching, Web Worker parallelization, and custom configuration options. web-ai aims to become a popular library for deploying deep learning to the web.