Introducing Extend UI — open-source components for document agents

Name: Introducing Extend UI — open-source components for document agents
Uploaded: 2026-06-09T15:31:04.000Z
Description: Extend UI is a collection of open-source components specifically designed for building document agents, user-facing document flows, and internal tools. This launch introduces 14 customizable components including viewers for PDF, DOCX, and XLSX files, as well as specialized tools for bounding box citations and e-signatures.

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Extend Try Extend →Kushal Byatnal · added yesterday

Extend UI is a collection of open-source components specifically designed for building document agents, user-facing document flows, and internal tools. This launch introduces 14 customizable components including viewers for PDF, DOCX, and XLSX files, as well as specialized tools for bounding box citations and e-signatures.

Highlights

▸14 components and examples
▸Support for PDF, DOCX, and XLSX viewers
▸Bounding box citations and file upload
▸MIT licensed and fully customizable
▸Available via shadcn component registry
▸Compatible with design system agents like Magic Patterns