Posts with two or more sources, i.e. the same image found on multiple websites such as Pixiv, DeviantArt, Twitter, etc.
The "same" image may often have technical differences such as a different resolution, compression, or file format.
Some cases where this applies:
- The "same" image from another source is uploaded as a parent or child.
- The artist himself/herself lists the additional sources in the commentary.
- Otherwise, make sure to leave a comment listing the additional sources.
Not to be confused with duplicate, although they may overlap sometimes.