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Android 17 is the first since 3.x to add new APIs without releasing to the AOSP

https://grapheneos.social/@GrapheneOS/117282080803799576
523•theanonymousone•6h ago•260 comments

Cloudflare Quick Tunnels

https://try.cloudflare.com/
575•jcbhmr•11h ago•247 comments

Saving another 100TB of RAM

https://blog.cloudflare.com/saving-100-tb-of-ram-with-math/
225•f311a•6h ago•42 comments

How OpenAI Used Its Own LLMs to Design Its Jalapeño Chip

https://spectrum.ieee.org/llms-for-chip-design
55•maxall4•2h ago•54 comments

The Farnese letter

https://simonklee.dk/farnese-letter
26•grigolin•1d ago•5 comments

How to Write with an LLM

https://sockpuppet.org/blog/2026/09/17/how-to-write-with-an-llm/
389•joeriddles•1d ago•268 comments

Xcode 27.1 Beta Release Notes

https://developer.apple.com/documentation/xcode-release-notes/xcode-27_1-release-notes
112•CameronBanga•7h ago•68 comments

Photon-Emission-Guided Laser Fault Injection Enables RP2350 Secure Debug

https://donjon.ledger.com/blog/rp2350-secure-debug-laser-fault-injection/
152•synack•8h ago•53 comments

Show HN: Cactus Needle 3: 8-29MB automation models can match DeepSeek V4 Flash

https://cactuscompute.com/needle
164•HenryNdubuaku•1d ago•78 comments

Cache-to-Cache: Direct Semantic Communication Between LLMs (2025)

https://arxiv.org/abs/2510.03215
66•rochansinha•6h ago•12 comments

The first new cat species discovered in 100 years

https://www.nationalgeographic.com/animals/article/meet-the-first-new-cat-species-discovered-in-1...
169•ohjeez•1d ago•57 comments

OpenJev

https://openjev.com/
556•ilreb•16h ago•245 comments

Claude Code now reads AGENTS.md if there is no Claude.md

https://code.claude.com/docs/en/changelog
508•datadrivenangel•4h ago•182 comments

Show HN: LiveWorld – Every 24/7 YouTube live camera on one globe

https://liveworld.info/
5•harisingh1612•1h ago•0 comments

Cyclomatic Complexity in C#

https://blog.ndepend.com/understanding-cyclomatic-complexity/
34•gone35•2d ago•15 comments

Two parallel neural ectoderm progenitors contribute to the developing brain

https://www.newscientist.com/article/2589739-our-brain-evolved-from-two-primitive-nervous-systems...
103•Jimmc414•10h ago•54 comments

The Implications of Linguistic Illegibility for LLM Security

https://arxiv.org/abs/2609.02852
52•tomjakubowski•6h ago•19 comments

Column built an issuer processor from scratch

https://column.com/card-issuing/
22•Matthalp•2d ago•5 comments

Minimal Phone 2

https://minimalcompany.com/
182•nashashmi•23h ago•175 comments

Warez: The Infrastructure and Aesthetics of Piracy (2021)

https://archive.org/details/b904a8eb-9c98-4bb1-bf25-3cb9d075b157
104•succinct_ideas•22h ago•23 comments

C++26: Trivial infinite loops are no longer undefined behaviour

https://www.sandordargo.com/blog/2026/09/16/cpp26-trivial-infinite-loops
148•ibobev•1d ago•198 comments

LispBM is a concurrent Lisp for microcontrollers with message passing

https://www.lispbm.com/
5•so-cal-schemer•2d ago•1 comments

Alibaba open-sources AI model that can detect cancer and nearly 150 conditions

https://www.scmp.com/tech/big-tech/article/3368055/alibaba-open-sources-medical-ai-model-can-dete...
22•yogthos•1h ago•4 comments

Inside ZCode: Silently uploading your Git history to the cloud

https://blog.ferstar.org/en/posts/zcode-silent-workspace-snapshot-upload/
254•csmantle•19h ago•91 comments

How SpaceX streamlined the Raptor engine

https://www.construction-physics.com/p/how-spacex-streamlined-the-raptor
163•JumpCrisscross•1d ago•40 comments

A search-and-inference database from scratch in pure Zig

https://antfly.io/research/antfly-zig
53•kingcauchy•3d ago•16 comments

Size-Specialized Memory Allocation

https://go.dev/blog/size-specialized-allocations
15•spacey•2d ago•3 comments

I vibed a proof of Conway's conjecture

https://overreacted.io/how-i-vibed-a-proof-of-conways-conjecture/
209•m-hodges•11h ago•185 comments

North Korean nuclear test sets off years of earthquakes

https://www.science.org/content/article/north-korean-nuclear-test-sets-years-earthquakes
183•rbanffy•11h ago•151 comments

From Geometry to Algebra and Back Again: 4000 Years of Papers (2023) [video]

https://www.youtube.com/watch?v=1cRFfYQYGxE
28•surprisetalk•1d ago•0 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?