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0 pointszimpenfish3y ago0 comments

tl;dr: AVIF, HEIC and WEBP all handily beat JXL for the Minecraft and CSGO screenshot.

From the article, minecraft.jxl is 545275 bytes.

Using imagemagick[1] to convert to various formats at 8bit depth:

     191875  36.39% csgo.avif
     288048  54.63% csgo.webp
     349204  66.23% csgo.heic
     507882  96.32% csgo-8bit.jxl
     511727  97.05% csgo-85.jpg
     527282 100.00% csgo.jxl
     960946 182.25% csgo-95.jpg
    3665475 695.16% csgo.png

     183935  33.73% minecraft.avif
     266890  48.95% minecraft.webp
     358482  65.74% minecraft.heic
     490623  89.98% minecraft-85.jpg
     522250  95.78% minecraft-8bit.jxl
     545275 100.00% minecraft.jxl
    1047533 192.11% minecraft-95.jpg
    3018052 553.49% minecraft.png

[1] Version: ImageMagick 7.1.1-6 Q16-HDRI aarch64 21020 https://imagemagick.org

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3 comments · 2 top-level

zokier3y ago· 1 in thread

You can't just compare lossy image formats on size alone, you have to factor in image quality. All of the formats have one or more quality parameters that have huge impact on size/quality.

Dalewyn3y ago

When it comes to computer screenshots, it's PNG or another lossless format or GTFO. Even moreso if the purpose is comparing image quality of the screenshots' contents.

(No, I did not see those JPEG-XL images because Chromium laughs at it.[1])

[1]: https://news.slashdot.org/story/23/04/16/002204/fsf-says-goo...

ksec3y ago

This is coming from a 2009 account so I am guessing all these results have a similar score in quality testing? If so which metric did you measure it with?

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