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Lossless Float Image Compression

news.ycombinator.com Unknown 2025-07-25 03:12:21

Back in 2021 I looked at OpenEXR lossless compression options (and I think my findings led a change of the default zip compression level, as well as change of the compression library from zlib to libdeflate. Yay blogging about things!). Then in 2023 I looked at losslessly compressing a bunch of floating point data, some of which might be image-shaped. Well, now a discussion somewhere else has nerd-sniped me to look into lossless compression of floating point images, and especially the ones that

Topics: compression data exr jpeg xl
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Faking a JPEG

news.ycombinator.com Unknown 2025-07-29 05:57:25

25th March 2025: Faking a JPEG Click to expand I've been wittering on about Spigot for a while. It's small web application which generates a fake hierarchy of web pages, on the fly, using a Markov Chain to make gibberish content for aggressive web crawlers to ingest. Spigot has been sitting there, doing its thing, for a few months now, serving over a million pages per day. I've not really been keeping track of what it's up to, but every now and then I look at its logs to see what crawlers are

Topics: data jpeg random spigot web
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Why JPEGs still rule the web (2024)

news.ycombinator.com Ernie Smith 2025-09-08 22:51:10

A version of this post originally appeared on Tedium, Ernie Smith’s newsletter, which hunts for the end of the long tail. For roughly three decades, the JPEG has been the World Wide Web’s primary image format. But it wasn’t the one the Web started with. In fact, the first mainstream graphical browser, NCSA Mosaic, didn’t initially support inline JPEG files—just inline GIFs, along with a couple of other formats forgotten to history. However, the JPEG had many advantages over the format it quickl

Topics: compression dct format image jpeg
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Why JPEGs Still Rule the Web After 30 Years

news.ycombinator.com Ernie Smith 2025-09-09 13:51:10

A version of this post originally appeared on Tedium, Ernie Smith’s newsletter, which hunts for the end of the long tail. For roughly three decades, the JPEG has been the World Wide Web’s primary image format. But it wasn’t the one the Web started with. In fact, the first mainstream graphical browser, NCSA Mosaic, didn’t initially support inline JPEG files—just inline GIFs, along with a couple of other formats forgotten to history. However, the JPEG had many advantages over the format it quickl

Topics: compression dct format image jpeg
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