EXTEND UI OPENS DOCUMENT COMPONENT LIBRARY

INDUSTRY DESK■ 1 MIN READ

THU, JUN 11, 2026

■ AI-SUMMARIZED FROM 1 SOURCE ▸ TIMELINE

Extend AI has open-sourced Extend UI, a 14-component MIT-licensed kit for building document viewers and editors. The library handles PDF, DOCX, and XLSX files plus features like e-signatures and file uploads.

The team behind Extend AI released the UI kit after finding existing document component libraries lacking in both functionality and polish. Extend UI includes pre-built components for common document operations, bounding box citations for precise text referencing, and customizable elements for file uploads and electronic signatures. All 14 components come with working examples and full customization support. The library is available on MIT license, allowing developers to modify and integrate it into their own applications without licensing restrictions. Extend UI was initially developed for internal use at Extend.ai but is now available to the broader development community. The release includes a demo video showcasing the components in action. Developers can access the project through the company's GitHub repository.

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