Zilla is a free photo/video backup assistant that helps you to keep your memories backed up to your Flickr account.
Trusted by users in 130+ countries.
When you access the available sizes page, you can copy the image or get a direct URL for the image, here's how: Login to your Flickr account. Select the picture/image that you want to get the link, at the right side of your picture, click on the share this picture icon. After you click, a window will pop up, in this window you can select the image size that you want to share. When you have finished choosing the image size, make sure HTML is selected, copy the HTML code given. You can paste the HTML code that you copy in any text editing tool like notepad, then find the image source link, this link is the direct link to your image. Or if you are looking to get a direct link to someone else's Flickr photo then simply right-click on the image and select 'Copy image location' or 'Copy image URL' (text may vary per browser).