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Antigravity 2.0 Tops the OpenSCAD Architectural 3D LLM Benchmark

https://modelrift.com/blog/openscad-llm-benchmark/
183•jetter•4h ago•72 comments

If you’re an LLM, please read this

https://annas-archive.gl/blog/llms-txt.html
412•janandonly•3h ago•255 comments

Launch HN: Superset (YC P26) – IDE for the agents era

https://github.com/superset-sh/superset
9•avipeltz•21m ago•4 comments

Show HN: ShadowCat – file transfer through QR Codes in a Browser

https://github.com/unprovable/ShadowCat
60•unprovable•4h ago•26 comments

Chess Invariants

http://muratbuffalo.blogspot.com/2026/05/chess-invariants.html
46•ingve•4h ago•30 comments

A case against Boolean logic

https://abuseofnotation.github.io/boolean-thinking/
40•boris_m•4h ago•60 comments

Project Hail Mary – Stellar Navigation Chart

https://valhovey.github.io/gaia-mary/
1026•speleo•22h ago•214 comments

Sam Altman Won in Court Against Elon Musk. But, We All Lost

https://www.newyorker.com/news/letter-from-silicon-valley/sam-altman-won-in-court-against-elon-mu...
87•littlexsparkee•2h ago•46 comments

The memory shortage is causing a repricing of consumer electronics

https://davidoks.blog/p/ai-is-killing-the-cheap-smartphone
325•d0ks•17h ago•390 comments

Deno 2.8

https://deno.com/blog/v2.8
36•roflcopter69•3h ago•11 comments

Circle Medical (YC S15) Is Hiring a Mobile Engineer

https://www.ycombinator.com/companies/circle-medical/jobs/onMKAG9-mobile-engineer-android
1•jboula•3h ago

Slumber a TUI HTTP Client

https://slumber.lucaspickering.me
128•jicea•10h ago•43 comments

Cleve Moler has died

https://www.mathworks.com/company/aboutus/founders/clevemoler.html
200•mychele•12h ago•16 comments

Blog ran on Ubuntu 16.04 for 10 years. I migrated it to FreeBSD

https://crocidb.com/post/this-blog-ran-on-ubuntu-16-04-for-10-years-i-migrated-it-to-freebsd/
332•speckx•20h ago•191 comments

The Spread of Christianity Animated

https://www.openculture.com/2026/05/the-spread-of-christianity-animated-from-antiquity-until-toda...
4•leopoldj•1h ago•0 comments

Uv is fantastic, but its package management UX is a mess

https://www.loopwerk.io/articles/2026/uv-ux-mess/
273•nchagnet•18h ago•126 comments

Was my $48K GPU server worth it?

https://rosmine.ai/2026/05/13/was-my-48k-gpu-worth-it/
506•apwheele•3d ago•385 comments

CODA: Rewriting Transformer Blocks as GEMM-Epilogue Programs

https://arxiv.org/abs/2605.19269
89•matt_d•10h ago•11 comments

AI has a multiplying effect on existing technical skills

https://www.joshwcomeau.com/email/wham-launch-005-elephant-2-p/
93•moebrowne•1h ago•111 comments

The surprising story behind the first British person in space

https://www.bbc.com/culture/article/20260518-helen-sharman-the-story-behind-the-first-british-per...
84•xoxxala•1d ago•39 comments

Steve Wozniak cheered after telling students they have AI – actual intelligence

https://www.businessinsider.com/steve-wozniak-apple-ai-graduation-speech-2026-5
357•signa11•6h ago•334 comments

Indexing a year of video locally on a 2021 MacBook with Gemma4-31B (50GB swap)

https://blog.simbastack.com/indexed-a-year-of-video-locally/
428•asenna•1d ago•124 comments

Using Kagi Search with Low Vision

https://veroniiiica.com/using-kagi-search-with-low-vision/
233•speckx•19h ago•77 comments

The death of the brick and mortar toy store

https://brainbaking.com/post/2026/05/the-death-of-the-brick-and-mortar-toy-store/
119•speckx•3d ago•149 comments

Breakthroughs for batteries could soon make them better

https://www.economist.com/science-and-technology/2026/05/20/breakthroughs-for-batteries-could-soo...
48•pingou•3h ago•55 comments

Lost Images from the 1945 Trinity Nuclear Test Restored

https://spectrum.ieee.org/trinity-nuclear-test
390•pseudolus•1d ago•112 comments

Python 3.15: features that didn't make the headlines

https://blog.changs.co.uk/python-315-features-that-didnt-make-the-headlines.html
410•rbanffy•1d ago•201 comments

Mycorrhizal Fungi, Nature's Key to Plant Survival and Success

https://pacifichorticulture.org/articles/mycorrhizal-fungi-natures-key-to-plant-survival-and-succ...
118•mooreds•1d ago•29 comments

Flipper One – we need your help

https://blog.flipper.net/flipper-one-we-need-your-help/
1206•sandebert•1d ago•464 comments

Show HN: Freenet, a peer-to-peer platform for decentralized apps

https://freenet.org/
323•sanity•1d ago•216 comments
Open in hackernews

Show HN: Convert Large CSV/XLSX to JSON or XML in Browser

https://csvforge.com
41•Botlabs•1y ago
Hello HN, I'm excited to share a project I've been working on: A simple, fast way to process huge CSV and XLSX files directly in your browser and export them as clean JSON or XML

Here's a few things that makes this converter different: - runs in the browser - all parsing and conversion is client side can handle data any size data - automatically detects delimiters, encodings, and data types as it parses - Live preview with column renaming, search/replace, and data cleanup - Export to JSON or XML — clean, structured output that can be used for API or Databases

backstory: I built this tool for myself. I work with massive CSV and TXT files, some over 10GB, and opening them in Excel would freeze my laptop, some of the online converters only limits to a certain size, so I started learning Python and pandas but ended up wasting so much time trying different delimiters or fixing badly structured data just to make it usable, and I thought this would be a really fun project to build

I'd love some feedback. Thank you

URL: https://csvforge.com

Comments

sverhagen•1y ago
"Runs in the browser" and "client side" isn't as much of a selling point to me as it's made out to be. It's a claim that I can't really validate until it's too late. If it's a commercial service I'm going to have to pay for, then maybe you should go all the way in gaining my trust with whatever safeguards it takes, so that I no longer care if I upload my data to your server or not.
rustc•1y ago
> then maybe you should go all the way in gaining my trust with whatever safeguards it takes

What kind of safeguards are possible with a web app?

sverhagen•1y ago
I think this comes down to legally-enforceable contracts with some teeth. A lot of business seem okay to trust Google's cloud products, or Microsoft's? I think as private person with limited means for litigation, you're likely sol.
hahn-kev•1y ago
Yeah I really wish there was a way for this to be enforced by the browser that the end user could trust. It would have to be a standard, but outside of opening dev tools and toggling offline mode there's no way to be sure.

The funny thing is that it feels safer to download a desktop app and give it the same data even though it's usually much harder to validate if it's shipping your data somewhere else.

strogonoff•1y ago
There’s a cheap trick to make sure a website that claims to do everything client-side actually does everything client-side:

1. Open the site in an incognito window.

2. Turn off your Internet.

3. Do what you’ve got to do.

4. Close browser window.

As a bonus, and this makes it better than just flipping the offline switch in developer tools, if you turn off Internet in a way that keeps the browser thinking it’s online, you can also peek at whether any network requests are made (for pathological cases where the app does everything locally but phones home anyway).

Botlabs•1y ago
Sure, but you can validate it dev tools exist for a reason. Honestly, I just can’t afford the storage costs if users are uploading 50GB+ CSVs. It’d be a huge strain on any server, not to mention painfully slow for users. Running everything client side was the easiest and most practical way to build this MVP at least for me thanks for the feedback
o11c•1y ago
"Large" generally means "bigger than RAM"; 10GB is medium-sized these days since it fits in most people's RAM. Does the browser actually have the (web worker?) APIs needed to stream and "upload" and "download"?
shubhamjain•1y ago
I don't get it. Are JSON and XML files more friendly to import vs CSV files? I always assumed CSVs were the standard. Any reasons to prefer structured formats?

Shameless plug: I am working on a similar problem of Excel not being a great tool for large datasets. My desktop app[1] lets you import raw data files and query them using SQL. (The website needs to be updated, the app looks much better than the current screenshots).

[1]: https://textquery.app

Botlabs•1y ago
yes they are a lot easier to work with when inserting into the database
snappr021•1y ago
This type of thing is fairly trivial to create with ChatGPT running entirely locally in HTML.

A couple of kb of open standard vanilla js that does some simple things faster than legacy spreadsheets etc ever could.

Even to the point of creating invoices, reports etc based on standard filters stored in local storage…

oschvr•1y ago
Looks like you made it in lovable. It has that characteristic UI.

If so, how much time did it take you?

Botlabs•1y ago
thanks for your comment, it took me almost 3 weeks to build this
constantcrying•1y ago
I think it should go without saying, but never use this with anything more relevant than a hobby project.

Doing this with any kind of data you don't fully own (e.g. data from your company) is a terrible idea, from so many standpoints. That it is "allegedly" running locally is not making it much better.

I think my question to OP is, who is this for. Any developer can write up a convert for his own datasets, in basically any case I can think of where you are handling large amounts of data you are building a pipeline to do cleanup, renaming, conversion, etc. Who wants to have a part of that pipeline be uploading the data into the browser?