Forensic Example · ·2 min read

We blacked out two banners. The photo's thumbnail still showed them.

We covered two exhibition names on our photo of the State Library of Victoria with black boxes and kept the file's original details. The small preview inside the file still showed both names.

Our photo of the State Library of Victoria in Melbourne, taken on an Android phone. We pretended two exhibition names were secret, covered them with black boxes, and kept the file's original details.

  • Library banners with two of them covered by black rectangles Before: the photo, blacked out.
  • The same banners from the file's thumbnail, with the names Butler and Woolf visible After: the thumbnail inside the same file, enlarged.

What changed

  • The picture. Both names are gone from the photo you see.
  • The thumbnail. The phone's small preview was saved with the copy. It still shows both banners: "Butler" is readable, "Woolf" partly behind a sign post.
  • The box itself. We drew two black boxes; the report flagged one solid-colour region.

What the report said: Authenticity A for the original, B for the blacked-out copy. It flagged a likely black-out and warned that the file had a thumbnail.

Report rows: possible concealment detected, and one thumbnail found that may keep the original content

Before you share a blacked-out photo, save a copy with its details removed and check that the copy has no thumbnail.

Go deeper

Tagged photo-privacy

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