Copyright Stamp Embedded in an Image File
This page is the CodyCross answer for the clue below from Art Museum, Group 737, Puzzle 2 (Free Drinks).
Question is: Copyright Stamp Embedded in an Image File
and the answer is: WATERMARK
Word Meaning:
WATERMARK — A translucent design impressed on the surface of paper and visible when the paper is held to the light.
Definitions from Wiktionary.