This was my 3rd upload from pixiv using an iPad...

My procedures of uploading with an iPad are:

(1)- Go to an image which you think is decent.

(2)- tap the medium sized image, which will produce a big version of the image.

(3)- hold your finger on the image, until 2 options which are 'save image' and 'copy' appear. Select the copy option.

(4)- Go to the web address section of internet browser. (Mine's Safari), and tap twice until the 'paste' option appears. Hit paste and it should appear.

Here:

From: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=40311429

To: http://www.pixiv.net/member_illust.php?mode=big&illust_id=40311429

And lastly: http://i1.pixiv.net/img31/img/xyzxyzxyz/40311429.jpg

I found out the hard way...

I saved the image onto the Camera Roll of the iPad before uploading. So it is probable that the file's size was shrunk to create less burden for the hard drive...