Apple brings SynthID invisible watermarking to iOS 27.2 AI image tools

According to an IT Home report on November 7, Apple updated its official support documentation on November 5, announcing that starting with iOS / iPadOS / macOS 27.2, a SynthID invisible watermark will be introduced for select Apple Intelligence image tools. The features covered by the watermark include Image Playground and Image Wand, as well as Clean Up, Extend, and Spatial Reframing in the Photos app. Notably, the tagging is not limited to fully AI-generated images; even photos taken by users will carry the SynthID watermark as long as they are processed with the specified AI tools listed above. Apple states that the watermarks are imperceptible to the human eye and do not alter the image's appearance, but they can be read by a SynthID detector. To check whether an image contains a watermark, users can visit synthid.com in a web browser, upload the image, and follow the on-screen steps to view the results. The report also notes that at this year's autumn launch event, Apple announced the introduction of Apple Reference Images for the iPhone 18 Pro lineup, which supports pixel-level annotation of real image data by leveraging the SynthID standard.