Extend UI

Overview

Extend UI is an open-source React component library and shadcn registry purpose-built for document workflows, AI agents, and file parsing applications. It provides 15+ specialized components for handling PDF, DOCX, XLSX, and CSV file flows.

Key Features

• AI Document Workflows: Citation highlights, file upload flows, parsing progress bars, and tabular diff viewers.
• shadcn-Compatible Registry: Add document components via standard shadcn CLI.
• Multi-File Format Support: Tailored UI primitives for PDF page viewers, sheet matrices, and OCR status badges.
• Fully Typed TypeScript: Strict schemas for document metadata, parsing nodes, and citation links.

Installation & Quick Start

npx shadcn@latest add https://ui.extend.ai/r/file-upload.json

import { FileUpload } from '@/components/ui/file-upload';

export default function DocumentAgent() {
  return <FileUpload onUpload={(files) => console.log(files)} />;
}

Why Choose Extend UI?

• Best for: LLM document agents, RAG search portals, OCR analytics dashboards, and internal file tooling.
• Not suitable for: General consumer landing pages with no document interactions.