It's easy with Postimage. Open the picture you want to post and put the cursor on it. You'll see two icons at the top of the pic....a "v" laying down and a trash can. Click on the V and it opens another box with five choices, you want the second from the bottom. Put the cursor on the icon at the far right and left click, it will then say "copied". Now put your cursor on your post where you want the picture to show and right click. The location will show so now Preview and your picture will be there. You don't have to copy/paste anything, the site does it for you. It's basically three clicks and your picture is posted. Click on the "v", click on the second from bottm line on the next screen, click on your post.
