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Uploaded images: Derivatives too bright

Description

When uploading images, all the derivatives created by CA are too bright.

I've tested with several PNGs (from different encoding tools), as well as JPGs.

Attached is a screenshot of a PNG:

  • Left: CA version (JPG too bright)

  • Right: Downloaded original (in different viewer)

I've verified that the image sources display correctly in different programs (gimp, ristretto, firefox, okular). I've also tested converting them with ImageMagick, to see if maybe there's gamma metadata interpreted incorrectly. Worked fine, too.

Any ideas?
Thank you in advance

Environment

Debian 9

Assignee

User known

Reporter

Peter Bubestinger

Labels

None

Components

Affects versions

Priority

Minor
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