Hacker News
Show HN: Convert a sprite sheet into a GIF with one click (open source)
I built a free web tool that turns sprite sheets (often used for video game character animations) into GIFs.
Upload your spritesheet image, and then use the controls to set row / column count, frame duration, and image offset margins.
The tool then converts your sprite sheet into a GIF file.
Completely free and open source (MIT license).
Github repo: https://github.com/collidingScopes/spritesheet-to-gif
Any suggestions or feedback would be much appreciated!
Comments URL: https://news.ycombinator.com/item?id=43595606
Points: 2
# Comments: 1
Discrete Mathematical Modeling [pdf]
Article URL: https://sites.math.washington.edu/~billey/classes/math.381.spring.2024/course.notes/381notes.pdf
Comments URL: https://news.ycombinator.com/item?id=43595596
Points: 1
# Comments: 0
Mathematical Foundations of Computing [pdf]
Article URL: https://web.stanford.edu/class/archive/cs/cs103/cs103.1184/notes/Mathematical%20Foundations%20of%20Computing.pdf
Comments URL: https://news.ycombinator.com/item?id=43595591
Points: 2
# Comments: 0
Llama4
Article URL: https://www.llama.com/llama4/
Comments URL: https://news.ycombinator.com/item?id=43595585
Points: 69
# Comments: 14
An Interview with Aeneas Rekkas, CTO of Ory
Article URL: https://ciamweekly.substack.com/p/an-interview-with-aeneas-rekkas
Comments URL: https://news.ycombinator.com/item?id=43595578
Points: 1
# Comments: 0
A streaming brain-to-voice neuroprosthesis
Article URL: https://www.nature.com/articles/s41593-025-01905-6
Comments URL: https://news.ycombinator.com/item?id=43595539
Points: 1
# Comments: 0
What happened to pathology AI companies?
Article URL: https://www.owlposting.com/p/what-happened-to-pathology-ai-companies
Comments URL: https://news.ycombinator.com/item?id=43595500
Points: 1
# Comments: 0
Cocktail Menu Collection
Article URL: https://indiebartender.com/menu-collection/
Comments URL: https://news.ycombinator.com/item?id=43595485
Points: 1
# Comments: 0
Aircraft supplier Howmet may halt orders if hit by Trump tariffs, letter says
Rock smashes through Tesla windshield, injures pregnant woman: B.C. police
Show HN: Experience iPhone's "Blob Keyboard" prototype from 2005
Hi HN,
I teach tech design history, and one of the key stories I cover is the development of the original iPhone keyboard by Ken Kocienda. Reading about it in his book "Creative Selection" is great, but I wanted my students (and now you!) to actually feel this step in the process.
So, I built a web simulator of the "Blob Keyboard", Kocienda's very first attempt at a touchscreen keyboard that actually works, from September 2005:
Try the Blob Keyboard: https://juliendorra.github.io/blob-keyboard-simulator/blob-k...
- Tap for the middle letter - Swipe left or right for the side letters
More on the github repo: https://github.com/juliendorra/blob-keyboard-simulator
The Blob Keyboard prototype emerged during a UX crisis for iPhone team (their software keyboard just didn't work at all, fingers being too big, and the Newton failure loomed over them), highlighting how innovation is rarely a straight path. It was developed on a tethered touchscreen display codenamed "Wallaby".
To make this simulator as authentic as possible, I referenced images from Kocienda's book and even got direct feedback and guidance from Ken Kocienda himself on Bluesky ([link to conversation snippet if desired, or just mention it]).
What to expect (or… what not to expect):
This is a reconstruction of a very early prototype with limitations reflecting that specific moment. The goal was to test first if typing with accuracy was even possible, as all the rest was moot if it failed!
It's NOT QWERTY: They were still hoping to get us out of QWERTY, but then familiarity won. No Backspace: You can't delete. No Cursor Movement: The text field is just a simple display. No Caps or Numbers: Only lowercase letters. No Smooth Animations: Keys just "pop" instantly when pressed. Kocienda noted that your eye fills in the gaps, giving a sense of movement. Best Experience:
While it works with a mouse/trackpad on desktop, it's designed for touchscreens to better replicate the original Wallaby hardware interaction. Use it on your phone!
This project aims to provide a tangible glimpse into a turning point moment in iPhone development and the iterative nature of design. It's like stepping back in time and trying out that early demo on Kocienda's desk.
I would love to hear your reactions and thoughts on experiencing this piece of UI history! What other significant prototype do you wish you could experience?
Comments URL: https://news.ycombinator.com/item?id=43595442
Points: 2
# Comments: 0
Help shape the future of VisPy 2.0 – ideas, feedback, and contributors welcome
Article URL: https://github.com/vispy/vispy/discussions/2661
Comments URL: https://news.ycombinator.com/item?id=43595438
Points: 1
# Comments: 0
Show HN: A self-solving Rubik's Cube designed with the help of AI
Article URL: https://rubik.stingtao.info/
Comments URL: https://news.ycombinator.com/item?id=43595436
Points: 1
# Comments: 2
Musk takes aim at Peter Navarro, disparaging his qualifications in a post on X
Article URL: https://www.cnbc.com/2025/04/05/trump-tariffs-live-updates-global-trade-reacts.html
Comments URL: https://news.ycombinator.com/item?id=43595176
Points: 1
# Comments: 0
Show HN: Reharmonizing Racing in the Street by Bruce Springsteen
I put together a short essay on re-harmonizing Racing in the Street by Bruce Springsteen. Just a simple demonstration of what’s possible today with a few hours and the right mix of technology
Comments URL: https://news.ycombinator.com/item?id=43595168
Points: 1
# Comments: 0
The Greatest Motorcycle Photo
Article URL: https://www.life.com/arts-entertainment/the-greatest-motorcycle-photo-ever/
Comments URL: https://news.ycombinator.com/item?id=43595165
Points: 1
# Comments: 0
Free Image Compressor
Article URL: https://tinypicpro.com/
Comments URL: https://news.ycombinator.com/item?id=43595156
Points: 1
# Comments: 0
I built an open source Computer-use framework that uses Local LLMs with Ollama
Article URL: https://twitter.com/trycua/status/1908569002471022682
Comments URL: https://news.ycombinator.com/item?id=43595147
Points: 1
# Comments: 1
LessDoom: Response to AI 2027
Article URL: https://sergey.substack.com/p/lessdoom-ai2027
Comments URL: https://news.ycombinator.com/item?id=43595146
Points: 1
# Comments: 0
My 1979 trip to Oxford and London
Article URL: https://marginalrevolution.com/marginalrevolution/2025/04/my-1979-trip-to-oxford-and-london.html
Comments URL: https://news.ycombinator.com/item?id=43595138
Points: 1
# Comments: 0