@kushalbyatnal: Introducing Extend UI — open-source components for document agents - 14 components & examples for PDF, DOCX, and XLSX v…
Summary
Extend UI is an open-source library of 14 UI components for document agents, including viewers for PDF, DOCX, XLSX, with features like bounding box citations, file upload, and e-signature. It is MIT licensed and available on the shadcn component registry.
View Cached Full Text
Cached at: 06/10/26, 05:47 AM
Introducing Extend UI — open-source components for document agents
- 14 components & examples for PDF, DOCX, and XLSX viewers, plus bounding box citations, file upload, e-signature, and more
- fully customizable
- MIT licensed
when we started, we tried every file viewer and document component library we could find
unfortunately, none of them had all the functionality (and polish) that we wanted, so we ended up building our own for @ExtendHQ
it was only ever meant to be internal, but enough customers kept asking for it that we decided to give it back to the community
it’s useful for building agents, user-facing document flows, or internal tools
we use and maintain it for Extend ourselves, so it’ll keep getting better over time (and it’s battle tested on millions of pages running through our system every day)
it also works with design system agents like @magicpatterns for faster exploration and prototyping
available today on the @shadcn component registry! some examples in
Similar Articles
Show HN: Extend UI – open-source UI kit for modern document apps
Extend UI is an open-source UI kit for modern document apps, providing viewers for PDF, DOCX, XLSX, and CSV files, along with features like bounding box citations, file upload, and e-signing.
We built an open source UI kit for document RAG/agents
An open source UI kit with 15 components for document viewing (PDF, DOCX, XLSX) including bounding box citations, file upload, e-signature, and file system integration, released under MIT license.
@kushalbyatnal: today, we're open sourcing the Extend CLI watch Fable use it to parse and extract an entire corpus of documents — end t…
Open sourcing the Extend CLI watch Fable, a tool to parse and extract documents end-to-end from the terminal. It includes a built-in agent skill compatible with Claude Code, Codex, and Cursor.
@nolansym: Free & Open Source Shadcn Components
cult-ui releases 92+ open-source AI agent UI patterns and full-stack Next.js templates for building copy-paste component libraries with shadcn.
@kushalbyatnal: Over 1 billion PDFs are created every day, but your agents still can’t read them reliably. Today we’re releasing Parse …
Extend released Parse 2.0, a state-of-the-art document parsing API that achieves top accuracy on real-world documents, outperforming competitors on the open-source RealDoc-Bench benchmark.