If I post from my phone I can directly upload photos to the site. If I post from my computer, I have to resize them. Is this a setting somewhere or does the site itself have control over when it resizes photos on upload?

When I post from my phone I can only upload one photo at a time, the 2 at a time never works. The upload window closes, but the pictures never actually show up in the attachments. Works fine 2 at a time from the computer.

Is there an easier way to upload photos? Maybe the same interface but being able to either drag and drop or select the full 8 allowed pictures at once? I'll fully admit that half the reason I don't post to the site as much is that the picture uploading process is so maddeningly frustrating and time consuming that I just don't bother most of the time.