Lack of interest Check for duplicate attachments on upload

[Joe Link]

Many of our users are not tech savvy and often end up accidentally uploading the same image to the same post twice. This add-on does a good job of finding these duplicate attachments, but it'd be nice if the user was notified before the post was posted.

 

[Kirby]

Erm ... the users are uploading the same image to the same post twice and you want to notify them about this?
Do you honestly think they will notice that if they don't notice the same image appearing twice in the same post?

 

[frm]

It would be even better if XF could have a hash of all images uploaded and if the same image is uploaded, to hotlink to the first one uploaded and disregard the 2nd. So, if an image was uploaded twice, it'd essentially only be stored once as the 2nd one would be trashed when comparing to all other images uploaded/uploading.

This could save some storage space on big boards when and if people use the same image over and over. I presume something like this is in effect on Facebook, etc. as it'd be ridiculous to store 1gb on the same meme, multiplied by millions of memes (sure, there'd need to be load balancing, but I highly doubt 1 picture is physically written 100,000+ times... right? )

 

[Kirby]

It would be even better if XF could have a hash of all images uploaded

This is the case and the data structures already do allow to share a single pyhsical file over multiple attachment ids, deduplication it's just not (yet) implemented.

 

[frm]

This is the case and the data structures already do allow to share a single pyhsical file over multiple attachment ids, deduplication it's just not (yet) implemented.

If that's not already suggested, I think that @Joe Link should suggest that instead, even if it's uploaded within the same post as I've copied/pasted an image multiple times not knowing whether it was physically stored once or twice (obviously catching it and deleting it though). Deduplication would solve his issue as well as save storage space all around.