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Commodore 64 released September 1, 1982

https://dfarq.homeip.net/commodore-64-released-september-1-1982/
55•giuliomagnifico•1h ago•6 comments

Claude Fable 5.1 and Claude Mythos 5.1

https://www.anthropic.com/claude-fable-and-mythos-5-1
1252•denysvitali•16h ago•1171 comments

The Emergent Symbolic Structure of Artificial Neural Networks

https://arxiv.org/abs/2608.29530
149•schmuhblaster•5h ago•44 comments

How accurate have Ed Zitron's AI skeptic predictions been?

https://danluu.com/zitron/
711•jatins•15h ago•776 comments

Fine, I'll build my own text editor

https://dbushell.com/2026/09/01/text-editor/
126•Alephinitesimal•16h ago•112 comments

FBI Probes Service Selling 153M+ Drivers Licenses

https://krebsonsecurity.com/2026/09/fbi-probes-service-selling-153m-drivers-licenses/
220•tatersolid•10h ago•94 comments

Introducing Ad Blocker for Firefox on iOS

https://blog.mozilla.org/en/firefox/ad-blocker-on-ios/
476•HieronymusBosch•20h ago•159 comments

WebFPGA

https://webfpga.io/
78•gurjeet•6h ago•32 comments

Telli (YC F24) is hiring engineers and designers [Berlin, on-site]

https://careers.telli.com/
1•sebselassie•1h ago

Sonic Pi

https://sonic-pi.net/
161•Bluestein•4d ago•34 comments

Show HN: Weedout – Safari extension that hides YouTube AI-labeled videos

https://masteranza.github.io/weedout/
143•masteranza•12h ago•63 comments

My local model setup on an M4 Pro Mac Mini

https://lws.io/blog/my-local-model-setup/
208•raybb•11h ago•124 comments

Ask HN: How do you survive a job you hate which is slowly making you sick?

31•_override•2h ago•39 comments

The efficient frontier of LLM inference

https://www.baseten.co/blog/the-efficient-frontier-of-llm-inference/
123•philipkiely•10h ago•30 comments

Launch HN: Nori Robotics (YC S26) – A low-cost humanoid robot for development

https://www.norirobotics.com/
173•AntonioLi•16h ago•52 comments

Ambient CSS v3 – Blender meets CSS

https://ambientcss.vercel.app/
274•kikkupico•18h ago•82 comments

Movie Scene Map – 13,312 films, series, games, anime and manga

https://moviescenemap.com/
257•Flightmussy•17h ago•37 comments

Path to Astra: critical capabilities and frontier safeguards

https://openai.com/index/path-to-astra/
159•jithinraj•13h ago•68 comments

True Rate of Unemployment

https://www.lisep.org/tru
235•ptrhvns•7h ago•193 comments

The ChatGPT/Codex app bundles a full copy of LibreOffice

https://simonwillison.net/2026/Sep/1/codex-libreoffice/
413•timpera•14h ago•190 comments

Open Battery Information

https://github.com/mnh-jansson/open-battery-information
3•toomuchtodo•3d ago•1 comments

The creator of Jujutsu has joined ERSC

https://ersc.io/blog/martin-joins-ersc
236•steveklabnik•16h ago•176 comments

Refurbishing a Tektronix TDS7104 Oscilloscope

https://tomverbeure.github.io/2026/08/23/Tektronix-TDS7104-Refurbishing.html
126•jwise0•14h ago•55 comments

Show HN: HN Match Maker – Matching "Who Wants to Be Hired?" With "Who's Hiring?"

https://hnmatchmaker.com/
90•all2•13h ago•37 comments

A Genealogy of Freudenthal's Lincos

https://www.shellsandpebbles.com/2026/01/19/a-genealogy-of-freudenthals-lincos-part-i-looking-up-...
10•akkartik•1d ago•1 comments

How bicycle coaster brakes work (2018)

https://www.dougbarnesauthor.com/2018/06/how-bicycle-coaster-brakes-work.html
63•Vedor•4d ago•53 comments

Ask HN: Who is hiring? (September 2026)

217•whoishiring•19h ago•243 comments

Forgotten History of Small Nuclear Reactors (2015)

https://spectrum.ieee.org/the-forgotten-history-of-small-nuclear-reactors
40•derriz•4d ago•26 comments

Show HN: Running 104GB Qwen3.8-Flash-Next on 48GB Mac with at ~12 tok/s

https://github.com/carloslfu/slotstream
212•carloslfu•17h ago•96 comments

Top Web Design Styles of 1993

https://contemporary-home-computing.org/prof-dr-style/
46•luu•1d ago•9 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?