1. Click the "new post" on imgur's main page. Drop your images in the box to upload.:
2. Hover over the image and you'll see a drop-down menu. Click "get share links":
… (more)
3. Copy the "BBCode (Forums)" image link

4. In notepad - Modify the image link to add the document extension: e.g. ".png" or ".jpg" to the end of the URL just before the "[/img]"
5. Paste the updated link into your forum post: (less)
