So....do I need to double delete the image to fix the problem or what?

In Photoshop, I forced a thumbnail redraw by making a small change and resaving it. Save post #666319 replace it and delete mine when you do.

That is if she is supposed to be on her back.

I believe the artist intend was her to be lifted off the ground while being choked to death, but it based on the thumbnail on Pixiv. I forgot what fireattack (was it him?) told me about what causes this kind of error.

If nothing else we can simply delete this and keep post #66319

Pixiv was saving the image with her on her back--horizontal but the Pixiv preview is vertical. So I have a vertical copy I deleted, post #666311 If that's the correct one, just undelete it.

wow ^^ What's that?

压缩文件(物理)

The reason is that this image contains exif rotation/orientation information, and our website's display code (width, height) doesn't take that into consideration.

It has been reported before: https://github.com/moebooru/moebooru/issues/132

I'd say just leave it as-is since it's just the display. The image files are fine.

On chrome its a mess like that, on MS Edge (old ver.) it shows ok even on thumbnail lol

Edit: On new Edge its also a mess :P

Wrote a quick user script to fix it

// ==UserScript==
// @name Fix image thumbnail orientation
// @namespace Violentmonkey Scripts
// @match https://yande.re/*
// @grant none
// @version 1.0
// @author fireattack
// @run-at document-idle
// ==/UserScript==

const imgs = document.querySelectorAll('img.preview,img.image');
for (let img of imgs) {
if (Math.round((img.width / img.naturalWidth - img.height / img.naturalHeight) * 10) === 0) continue;
let _ = img.width;
img.width = img.height;
img.height = _;
}

How is this script installed and activated? I'm trying Help searches, but must not be phrasing it right.

You need a script loader extension. Such as violentmonkey, tampermonkey or greasemonkey.

I have the greasemonkey extension installed on my Firefox browser, so it just took a couple of seconds to paste your code as a new script, save it and the thumbnail issue was fixed. I guess I thought it had to be installed somewhere in my yande.re account. Some days a simple answer gets me to the right aisle and I can take it from there. Thanks for the fix.