# documentai > Service to parse structured information from unstructured or semi-structured documents using state-of-the-art Google AI such as natural language, computer vision, translation, and AutoML. ## Support status **Note**: Google provides multiple libraries for this service. This library is in maintenance mode, and will continue to be made available for users who have existing applications. If you're building a new application, or modernizing a legacy application, please use [@google-cloud/documentai](https://www.npmjs.com/package/@google-cloud/documentai) instead. The [@google-cloud/documentai](https://www.npmjs.com/package/@google-cloud/documentai) library is faster, easier to use, and better maintained. To learn more, see [Client Libraries Explained](https://cloud.google.com/apis/docs/client-libraries-explained). ## Installation ```sh $ npm install @googleapis/documentai ``` ## Usage All documentation and usage information can be found on [GitHub](https://github.com/googleapis/google-api-nodejs-client). Information on classes can be found in [Googleapis Documentation](https://googleapis.dev/nodejs/googleapis/latest/documentai/classes/Documentai.html). ## License This library is licensed under Apache 2.0. Full license text is available in [LICENSE](https://github.com/googleapis/google-api-nodejs-client/blob/main/LICENSE). ## Contributing We love contributions! Before submitting a Pull Request, it's always good to start with a new issue first. To learn more, see [CONTRIBUTING](https://github.com/google/google-api-nodejs-client/blob/main/.github/CONTRIBUTING.md). ## Questions/problems? * Ask your development related questions on [StackOverflow](http://stackoverflow.com/questions/tagged/google-api-nodejs-client). * If you've found an bug/issue, please [file it on GitHub](https://github.com/googleapis/google-api-nodejs-client/issues). *Crafted with ❤️ by the Google Node.js team*