Hacker News: andrewlu0

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Thu, 11 Jun 2026 02:51:11 +0000

TIL those are called Miller columns !

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Thu, 11 Jun 2026 00:56:17 +0000

Valid feedback a few other comments have mentioned , I’m going to try improving the home page tomorrow

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Thu, 11 Jun 2026 00:54:13 +0000

We use react-pdf for the viewer which I believe uses pdf JS under the hood

We aren’t not trying to reinvent that engine, rather just provide a building block for people to plug in their design system to its controls

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 23:23:08 +0000

if you mean our docx viewer/editor specifically its hard to say without manually testing the visual fidelity with Word on some complex docx files

you are welcome to try it with your own documents and see, but its just one example we wanted to show. for the blocks that use the react-docx library, you can always copy the code and use a different method to render the docx file/thumbnails

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 23:20:37 +0000

it should be much faster on the individual component's page

the root page is a bit slow with all the viewers, in practice you probably wont have that many in your app on one page

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 23:19:25 +0000

coming back to this now and added it in a few places

on the demos - everything below the fold is lazy loaded but i will see what we can do to improve the mobile perf

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 22:48:17 +0000

i felt like we couldn't build much on top of react-markdown, which i think is what most people are using

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 22:45:39 +0000

we built a library @extend-ai/react-xlsx on top of it that renders the parsed contents onto a canvas

testing was mostly manual with a test corpus we generated. its not perfect but its pretty close for most files we've seen

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 20:35:28 +0000

nice - did you write a custom parser for PDF/DOCX? we wrote one for XLSX after running into event loop issues with sheet JS

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 20:22:37 +0000

thanks! would love to get your feedback

i can't promise its visually 1:1 with Word/Excel but its pretty close on the corpus we tested with

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 20:20:47 +0000

we'll try to make it more clear on the landing/introduction page!

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 19:59:31 +0000

thats fair and definitely something we can try supporting in the future. we started with React because of how familiar models are with shadcn and tailwind

we hope this can be useful for people building in React though!

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 19:46:44 +0000

hm seems to look ok on mine - is this on the root page?

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 19:32:49 +0000

yes - the pdf/docx viewer use react-virtual to virtualize the pages

the zoom should work with the bounding box highlights, we're working on adding rotation support

New comment by andrewlu0 in "Show HN: Extend UI – open-source UI kit for modern document apps"

andrewlu0 — Wed, 10 Jun 2026 18:48:06 +0000

Hi! I'm one of the engineers at Extend that worked on this - one of our other engineers created a Rust XLSX/XLS parser that we ported to WASM to our @extend-ai/react-xlsx package which handles the rendering/charts. It exposes some hooks so users can use their own components for the toolbar

New comment by andrewlu0 in "Show HN: OCR Arena – A playground for OCR models"

andrewlu0 — Tue, 25 Nov 2025 00:56:20 +0000

ideally we want people to rate based on quality - but i imagine some of the results are biased rn based on loading time

Show HN: Turn Office templates into shareable forms

andrewlu0 — Fri, 28 Jun 2024 18:36:05 +0000

We built this for an internal use case and thought it might be useful to others. The creator can have a copy of the templated document emailed to them as an attachment whenever someone submits the form.

Comments URL: https://news.ycombinator.com/item?id=40823625

Points: 2

# Comments: 0

How to build a multi-modal knowledge base

andrewlu0 — Thu, 30 May 2024 20:45:39 +0000

Article URL: https://www.dealpage.ai/blogs/how-to-build-a-multi-modal-ai-knowledge-base

Comments URL: https://news.ycombinator.com/item?id=40528502

Points: 2

# Comments: 0

New comment by andrewlu0 in "Show HN: Sync data from SaaS tools to a vector database automatically"

andrewlu0 — Thu, 13 Apr 2023 17:55:35 +0000

Nice, we're on Pinecone so maybe we can use this in the future. Could you see any way of integrating this with a token manager like Nango so our end users could integrate their own accounts?

New comment by andrewlu0 in "Launch HN: Baseplate (YC W23) – Back end-as-a-service for LLM apps"

andrewlu0 — Sun, 09 Apr 2023 18:43:40 +0000

Will check this out - it seems like its doing two separate searches where you specify two separate top K values. Curious what the trade offs are between this approach and weighting sparse/dense vectors