The things I keep uploading apparently are duplicates, yet the reverse search shows nothing.

Dutchnoob said:
The things I keep uploading apparently are duplicates, yet the reverse search shows nothing.

You have to not rely on just one of the reverse search methods. They aren't perfect, and often miss things. I found the bigger version of your image via google reverse search, clicking on "all sizes", and I found a bigger version. Even then, this seems to be a repost, but as of now it's the only biggest version I can find of this image for the moment.

Personally, I use a browser extension that helps me out with this on chrome, Image Search Options however the option is also available on esix extend, which has multiple methods of reverse image search.

DiceLovesBeingBlown said:
You have to not rely on just one of the reverse search methods. They aren't perfect, and often miss things. I found the bigger version of your image via google reverse search, clicking on "all sizes", and I found a bigger version. Even then, this seems to be a repost, but as of now it's the only biggest version I can find of this image for the moment.

Personally, I use a browser extension that helps me out with this on chrome, Image Search Options however the option is also available on esix extend, which has multiple methods of reverse image search.

Even on google it isn't working

Dutchnoob said:
Even on google it isn't working

Really? Maybe it's an error on your end, cause it seems to work just fine for me

Dutchnoob said:
The things I keep uploading apparently are duplicates, yet the reverse search shows nothing.

Problem doesn't appear to be that you are uploading dublicates of exsisting posts, instead you are uploading posts which have better version at the source when sources are found. Deletion reason is for both inferior and dublicate, so if your post ends up inferior, it's deleted with that reason once superior version gets uploaded.

Couple examples:
post #1647253, you sourced it from 4chan. There's always huge risk with third party sources that whoever handled the file, person or site, had no idea of what they are doing, so in this case it was simple case of finding out the artist and then going trough their galleries. (sadly FA doesn't have that useable search, so it's usually manual process)

post #1546183, this is even simpler case that you took the preview that's embedded on the page, instead of pressing "download" on right to get full image.
howto:sites_and_sources#deviantart

Something like post #1404540, I'm actually unsure where the imgur link originates, because that's even lower quality from artists gallery files sample (850x582 vs 920x630) and of course with inkbunny, pressing download gets you even higher resolution from the sample (1015x695).

So TL;DR is pretty much that if you want to avoid deletions like this, try to look up the artist and then their galleries for possibly better version of the image you are about to upload and upload that instead. Places like 4chan and imgur/reddit are generally bad when it comes down to preserving original quality.

DiceLovesBeingBlown said:
...however the option is also available on esix extend, which has multiple methods of reverse image search.

e621 by default has google, saucenao, e621 IQDB and inkbunny MD5 options at the bottom of left panel of every post, flash only has inkbunny and webm excludes inkbunny. Does esix extend add any options? As I have never used that software.