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Speech Recognition and TTS in less than 500kb

https://github.com/moonshine-ai/moonshine/tree/main/micro
124•petewarden•4d ago•15 comments

GPT-5.6 used a prompt to close a 30-year gap in convex optimization

https://old.reddit.com/r/math/comments/1uxj3cy/after_openais_cdc_proof_announcement_gpt56_used_a/
471•mbustamanter•9h ago•301 comments

Typing Speed Test, but for Developers

https://haxxorwpm.0s.is/
61•hronecviktor•2h ago•32 comments

If You Build It, They Will Come

https://www.benlandautaylor.com/p/if-you-build-it-they-will-come
196•barry-cotter•6h ago•67 comments

Judge a book by its first pages

https://uncovered.ink
4•bookofjoe•24m ago•2 comments

I'm Making Strandfall, a Solarpunk Orienteering Larp

https://mssv.net/2026/04/29/im-making-strandfall-a-solarpunk-orienteering-larp/
54•surprisetalk•5d ago•12 comments

Gleam Is Now on Tangled

https://tangled.org/gleam.run/gleam
173•nerdypepper•6h ago•118 comments

Is this the end of the once-mighty GoPro?

https://amateurphotographer.com/latest/photo-news/going-going-gone-is-this-the-end-of-the-once-mi...
171•aanet•3d ago•342 comments

Setting up your spare Mac for Claude Code to control, a step-by-step guide

https://ykdojo.github.io/claude-controls-mac/
151•ykev•6h ago•108 comments

Fable 5 vs. GPT-5.6 Sol on an NP-Hard Problem: Does /goal help?

https://charlesazam.com/blog/fable-5-gpt-5-6-sol-goal/
196•couAUIA•11h ago•99 comments

Regressive JPEGs

https://maurycyz.com/projects/bad_jpeg/
638•vitaut•19h ago•65 comments

Our Approach to Bioresilience: Isomorphic Labs and Google DeepMind

https://deepmind.google/blog/our-approach-to-bioresilience/
53•bookofjoe•6h ago•21 comments

Elixir-lang.org has a new design

https://elixir-lang.org/
141•bbg2401•6h ago•90 comments

LG monitors silently install software through Windows Update without consent

https://videocardz.com/newz/lg-monitors-silently-install-software-through-windows-update-without-...
923•baranul•12h ago•470 comments

A Second-Grade Teacher Revived a Beloved Video Game

https://www.nytimes.com/2026/07/13/style/backyard-baseball-video-game-teacher.html
60•danso•5d ago•23 comments

Show HN: Q3Edit – Edit and play Quake 3 maps in the browser

https://q3edit.com
56•drdator•7h ago•11 comments

The Kimi K3 Moment

https://stephen.bochinski.dev/blog/2026/07/18/the-kimi-k3-moment/
226•sbochins•4h ago•242 comments

Co-evolution of self-replication and function in a digital primordial soup

https://arxiv.org/abs/2607.09211
3•vicgalle_•1h ago•1 comments

Ada: An AI business intelligence software from CSV and Excel(yes LLMs but more)

https://github.com/saineshnakra/automated-data-analyst
4•saineshnakra•1h ago•0 comments

GTX 1080s: Testing a Legend

https://www.lttlabs.com/articles/2026/07/15/gtx-1080s-revisiting-legends
77•LabsLucas•3d ago•34 comments

What AI did to stackoverflow in a graph

https://data.stackexchange.com/stackoverflow/query/1953768#graph
342•secretslol•11h ago•395 comments

How GitHub gave every repository a durable owner

https://github.blog/security/application-security/how-github-gave-every-repository-a-durable-owner/
60•ascertain•1w ago•19 comments

Show HN: Rejourney – Open-source revenue leak prediction for web and mobile apps

https://github.com/rejourneyco/rejourney
32•mrr7337•4d ago•6 comments

Tech note: making your own V-I plots at home

https://lcamtuf.substack.com/p/tech-note-making-your-own-v-i-plots
55•zdw•1d ago•8 comments

Goodbye, and Thanks for All the Bikesheds

https://queue.acm.org/detail.cfm?id=3818307
162•Ygg2•4h ago•165 comments

The Computer at the Bottom of a Canal

https://negroniventurestudios.com/2026/07/18/the-computer-at-the-bottom-of-a-canal/
129•Kudos•13h ago•33 comments

The Zilog Z80 has turned 50

https://goliath32.com/blog/z80.html
271•st_goliath•1d ago•106 comments

SpaceX and the myth of independent Wall St research

https://www.ft.com/content/ce345155-d897-4f49-b7c8-13680e3b5434
29•JumpCrisscross•2h ago•10 comments

Qubes OS Security in the Public Record

https://arxiv.org/abs/2607.14587
75•sciences44•13h ago•11 comments

Reviving a 15-year-old netbook with Arch Linux

https://parksb.github.io/en/article/41.html
207•parksb•4d ago•148 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?