How to upload an invisible image?

You want to upload an image to Blogger, but has no place to display it; what you want actually is just that image's URL. Is that right? Here is the solution:

1. Go to Dashborad > New post.

2. Upload the image.

3. Click HTML button to record the image's src.

4. Click Close that editing page.

5. Discard that draft.

Now you can use that image's URL anywhere.