Extend UI: React Document Components for Document

Extend UI: an open-source React and shadcn/ui component library for document-heavy apps.

Key features:

• PDF, DOCX, XLSX, and CSV viewers.
• File upload, thumbnails, and Finder-style browsing.
• Bounding box citations and review panels.
• shadcn registry installs with editable local source.

👉 Blog Post

👉 GitHub Repo

👉 Live Demo