SheetJS

SheetJS is a comprehensive JavaScript library designed to simplify the complexities of working with spreadsheet files. It provides powerful functionalities to read, edit, and export data from various spreadsheet formats directly within web browsers and server-side environments like Node.js. This versatility makes it an invaluable tool for developers looking to integrate robust spreadsheet capabilities into their applications without relying on external services or desktop software. The library is trusted by a wide range of organizations, from tech giants like Google and Amazon to government entities and over 90% of S&P 500 companies, underscoring its reliability and performance. It offers both a Community Edition, which is truly open source and suitable for many projects (requiring attribution), and a Professional Edition that unlocks advanced features, broader compatibility, and priority support for more demanding enterprise use cases. Whether you need to enable users to upload and process data, generate custom reports, or programmatically manipulate spreadsheet content, SheetJS provides the tools to achieve these tasks efficiently.