Hacker News with Generative AI: Image Formats

How Are Images Stored? A Deep Dive into GIF, PNG, and JPEG (cefboud.com)
This post is me indulging in a rabbit hole. I somehow found myself thinking about images, probably after my recent exploration of some compression schemes. It’s common knowledge that images are either grayscale or RGB, that mixing red, green, and blue creates new colors. But there’s certainly more to storing an image than just aligning three-byte RGB values.
Image Formats, Digital Images, Image Compression, Computer Graphics
5 points by Cef111 14 days ago | 0 comments
JPEG XL: What It Is and Why You Should Care (2024) (petapixel.com)
JPEG XL is a new-generation image file format that recently got a big boost to awareness thanks to native support in the iPhone 16 series smartphones. So what is it, why does it matter, and why should you use it? Who better to ask than one of the people who helped make it a reality?
Image Formats, Technology, Mobile Devices, Photography
42 points by ksec 22 days ago | 8 comments
The maximum pixel dimensions of a WebP image is 16383 x 16383 (developers.google.com)
WebP is a method of lossy and lossless compression that can be used on a large variety of photographic, translucent and graphical images found on the web.
WebP, Image Compression, Image Formats
4 points by surprisetalk 111 days ago | 2 comments
Ask HN: Why aren't more apps using WebP format? (ycombinator.com)
WebP has been around for a while now, offering better compression and performance over JPEG and PNG. So why haven't more apps fully adopted it yet? Are there hidden compatibility issues, performance downsides, or just inertia in the industry? Curious to hear if the switch to WebP has made a difference for anyone here, especially for mobile performance.
Web Development, Image Formats, Mobile Performance
11 points by dngit 113 days ago | 20 comments
How JPEG XL compares to other image codecs (cloudinary.com)
A year ago, I talked about JPEG XL at ImageCon 2019. It’s time for an update.
Image Compression, Image Formats, JPEG XL
156 points by bentocorp 121 days ago | 71 comments
PNG can be Animated Wait WTF? APNG file format (wikipedia.org)
Animated Portable Network Graphics (APNG) is a file format which extends the Portable Network Graphics (PNG) specification to permit animated images that work similarly to animated GIF files, while supporting 24 or 48-bit images and full alpha transparency not available for GIFs. It also retains backward compatibility with non-animated PNG files.
Image Formats, Animation, PNG, GIF, Technology
12 points by fussylogic 149 days ago | 1 comments
iPhone 16 Pro lets users capture ProRAW photos in JPEG-XL format (9to5mac.com)
Even before the launch of the iPhone 16 on Monday, 9to5Mac had already reported that the new Pro models would have the ability to take photos in JPEG-XL format.
iPhone, Photography, Image Formats, Apple
44 points by ksec 159 days ago | 62 comments
The Windows Console gets support for Sixel images (github.com/microsoft)
Windows, Image Formats, Programming, Open Source
53 points by zadjii 234 days ago | 37 comments
LZW and GIF explained (eecis.udel.edu)
Data Compression, Image Formats, Computer Science
92 points by networked 272 days ago | 15 comments
Chromium jpegxl issue closed as won't fix (chromium.org)
Chromium, Open Source, Image Formats, Software, Bug Reports
68 points by thayne 277 days ago | 35 comments
500 Byte Images: The Haiku Vector Icon Format (2016) (leahhanson.us)
Image Formats, Design, Web Development, Vector Graphics
145 points by smartmic 297 days ago | 41 comments