Danbooru

Pixiv manga - large images

Posted under General

I noticed when browsing images in manga mode on Pixiv, there is a new option on each image: オリジナルサイズ (original size) I think on old images this doesn't mean anything, as I found no difference double-checking some manga I came across. Seems with newer images (probably only after this option was implemented), though, it may actually turn up a larger image. I found out so comparing them on post #792979 and made sure to upload the larger image. The original sizes appear to have a URL like "_big_p0.jpg" rather than "_p0.jpg". The source URL's for these images also won't redirect properly, so I thought it was worth bringing up so that could be addressed as well.

Updated by animenutcase

Indeed, clicking this option doesn't return a larger version for older images, and copying the "_big_p0.jpg" part to their URL returns a 403.

Maybe it's still possible to get a larger version if you spoof the HTTP referrer or smth, but I guess we'll have to wait for evazion or someone else who actually knows how to do this to know for sure.

Fred1515 said:
Indeed, clicking this option doesn't return a larger version for older images, and copying the "_big_p0.jpg" part to their URL returns a 403.

Yeah, checking, it looks like the different link doesn't exist at all on older images ("original size" option is there, but the image it gives you still has the exact same URL).

What I described above with not finding any differences appears to be with newer images that I think are below a certain resolution threshold. They don't get reduced, and the "_p0.jpg" and "_big_p0.jpg" versions are exactly the same image. In my checking of the rest of the set from my example above, post #792930, for instance, doesn't show any difference in "original size", even though the rest all have differences.

Updated

I doubt that this option will give much bigger pics(the diffrence between mine and Eb's were something like 30-70 pix ?, on average). On contrary, it may cause people uploading 2 versions of the same arts -_- and as far as I know there is no procedure what to do with lower resolution upload when higher quality upload is uploaded a few minutes after. Non-contributors lose at leaving such posts approved , while users with mods+ can simply link them as "child posts". Example : post #788925(Posted: 7 days ago) vs. post #790777 (Posted: 3 days ago, low resolution). It's not that I want to be picky about uploading lower resolution art after HQ art was uploaded before, but with this news it will probably be happening more often than usual.

Does anyone know when this feature was first introduced?

HNTI said:
I doubt that this option will give much bigger pics.

Right now it's a new feature and most artist aren't aware of it. As time past, we might see a jump in more larger copies within manga uploads. Key word here is might as we don't know if artist would waste their time on this feature.

HNTI said:
On contrary, it may cause people uploading 2 versions of the same arts

Or just the largest copy if they actually take the time to check before uploading? Now how many uploaders will take the few seconds to check every single manga upload that past their interests to see for any differences, I have no idea.

Non-contributors lose at leaving such posts approved , while users with mods+ can simply link them as "child posts".

I understand how you feel. From a privilege user and below perspective this could spell trouble especially if your post has been approved before some contributor "rains on your parade" so to speak. Now to be honest the same kind of thing happens when a privilege/member post an image then a contributor posts an alternate version of that image after. Contributor usually wins out on that.

I've actually noticed that a few users who when don't manage to upload first arts, generously do some effort to find these BIGGER by 30 pixels arts and upload them (I don't mean your EB as you wrote me clarifying situation PM).

On the side note, maybe searching for the original size of one art should be implemented in FF danbooru uploader plug-in ? it would surely decrease a number of problems with whose upload of the same art is the best quality.

From a privilege user and below perspective this could spell trouble especially if your post has been approved before some contributor

BEFORE is a little or no harm as you lose nothing when your approved post is "overridden" by a better one, but when you have contributor's upload and your post is still pending to be approved you can as well add "-1" to your pool.

HNTI said:
One more thing, that new feature is only available on manga mode, right ? I haven't noticed any new buttons in interfaces of single arts.

I doubt it since those images have always had something similar with the difference between medium thumbnail and original large image. This seems to just be applying the same thing to the manga.

Updated

HNTI said:
BEFORE is a little or no harm as you lose nothing when your approved post is "overridden" by a better one, but when you have contributor's upload and your post is still pending to be approved you can as well add "-1" to your pool.

Whoops sorry about that. I meant to say "especially if your post hasn't been approved before some contributor post the bigger copy". I seriously got to triple check my messages before clicking the post button.

On the side note, maybe searching for the original size of one art should be implemented in FF danbooru uploader plug-in ? it would surely decrease a number of problems with whose upload of the same art is the best quality.

Which uploader? Bookmarklet or DanbooruUp?

Zekeltarfos said:
At least the オリジナルサイズ button is certainly a recent introduction. This twitter post
http://twitter.com/pixiv/status/4097775901872128
makes me assume it was introduced on November 15th, but I've found one older manga that has a (slight) difference between "original size" and scroll view.

So it's been around for at least a week now. Seem majority of the artists on Pixiv are still not aware of the feature yet...or don't care about it enough to try.

Great...

Thanks for the heads up, EB.

Updated pixiv thumbnail to include manga mode images that have a larger version available. "Thumbnail" perhaps isn't the best word when the lesser version could still be 1600px wide, but it will have to do.

HNTI said:
On contrary, it may cause people uploading 2 versions of the same arts -_- and as far as I know there is no procedure what to do with lower resolution upload when higher quality upload is uploaded a few minutes after. Non-contributors lose at leaving such posts approved , while users with mods+ can simply link them as "child posts".

Regular users can parent-child posts, too, you know... And the established procedure for pixiv thumbnails (when the full size has also been uploaded) is to make the lesser version a child of the full size, then flag the thumbnail for deletion:

Re: Duplicates vs pixiv thumbnails
Sent by jxh2154 to RaisingK 4 months ago

Since pixiv medium is just someone doing it wrong, I can see deleting these once they've been replaced. It'd be a good "incentive" to get people to do it right.

Same principle here (though maybe something more merciful is in order for something so new). Eventually, people will learn to double-check manga mode pictures before uploading.

Updated

is to make the lesser version a child of the full size, then flag the thumbnail for deletion:

I know, by the thing is in such little fact that it's just simple deletion, not "double deletion" (complete erasing such pic from the database).

HNTI said:
I know, by the thing is in such little fact that it's just simple deletion, not "double deletion" (complete erasing such pic from the database).

So? Double deletion isn't something to be done lightly. We've been over this before.

evazion said:
One accidental upload isn't going to hurt you. On the other hand, if you're careless and accidentally upload bad posts all the time then that should be reflected in your deleted post count. Double deleting accidental uploads would make it harder to keep track of these uploaders.

RaisingK said: Same principle here (though maybe something more merciful is in order for something so new). Eventually, people will learn to double-check manga mode pictures before uploading.

Right. Now, there might be an argument to be more lenient because this is a lot easier to miss than the usual thumbnail problem, but when all is said and done, there's no point in uploading the smaller size.

So yes I'd say to let your script notify people regarding this issue as well. We should be uploading the full sized image.

Regarding the larger size images not redirecting... has anyone contacted albert or put the issue on track so he can update the redirect?

jxh2154 said:
So yes I'd say to let your script notify people regarding this issue as well. We should be uploading the full sized image.

I just wish there were a more consistent, simple difference between the two sizes. Medium/small thumbnails are simple; always 600/150 px on the longest side unless the original is smaller. The image dimensions being larger than that is the one and only criteria, enforced by pixiv.

With this new size, though, sometimes there's a good difference, sometimes... not. For post #793840, both sizes are 700x875; "small" is 265 KB, "big" is 266.91 KB. What was the point of that? Meanwhile, for post #794006, "small" is 858x1200/855.53 KB, "big" is 1000x1400/903.98 KB

Instead of muddying up pixiv thumbnail, maybe I'll just create a new tag... "pixiv manga thumbnail", for lack of any other clue what to call it.

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