Technical points to consider when uploading a picture in the forum gallery?

[Lynx3d]

Hm I just uploaded a closeup of my last piece:

Bunfest

Since @raghukamath asked me to test the image new image upload settings, I remembered that I wanted to post a closeup at original resolution, but then totally forgot about it: [butterflegg_barbarian_closeup]

But it still got re-encoded at much lower quality, original was 690KiB (that’s 92% quality in Krita, “1x1, 1x1, 1x1” subsampling).

Whatever those 99% in discourse mean, it’s much lower than libjpeg…