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A comment on Image Scaling Attacks. Parent comment

Re:Image Scaling Attacks by TeMPOraL on Thursday October 29, 2020 @06:37AM (#24929015)
The article links to this browser test page:

http://www.ericbrasseur.org/gamma_dalai_lama.html

On my machine, both Firefox and Chrome display grey rectangles when scaling down. Why do the browsers get this wrong?

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Re:Image Scaling Attacks by tech2 on Thursday October 29, 2020 @08:31AM (#24929777)
Because resizing in a linear colorspace is more costly. JPEG can be resized without shifting colorspaces VERY cheaply, but requires loading into RAM if a change in colorspace (or gamma shift) is performed. The hit can be quite significant. On a phone or laptop it would hurt battery, on an online service (dynamic resizer service) it would impact latency.
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Re:Image Scaling Attacks by bawolff on Friday October 30, 2020 @02:25AM (#24939687)
> on an online service (dynamic resizer service) it would impact latency.

If its even possible at all. Sometimes users upload things like https://commons.wikimedia.org/wiki/File:“Declaration_of_vict...

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Re:Image Scaling Attacks by choppaface on Thursday October 29, 2020 @12:26PM (#24932206)
Can also depend on the monitor? When I drag this page between monitors I see different effects.
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