How Brave removes the identifier Brave removes the FBMD identifier at two points:

When you save an image, Brave removes the identifier before the download finishes. This protects you even if you upload the image later with another browser or app. When you upload an image to a website, Brave uploads a clean copy. The original file on your computer stays as it is. Brave’s metadata stripper is written in C++ with no extra libraries, so it stays small and fast. You can follow the work on GitHub.