Watermark, on this site, is the family: a mark that says where a file came from. The visible half is the corner logo, the word 'AI', the generator's type. A generation toggle, where a model exposes one, almost always governs this half. Cropping the corner removes it and wrecks the frame. That is the whole design: a person can see it, a person can hide it.
Invisible provenance is the other half. SynthID sits in the pixels or the samples and is built to survive a re-encode. Content credentials (C2PA) are a signed hash of one exact copy and die the moment those bytes change. A visible mark does neither job. It is not machine-readable, it does not survive a crop, and it is not a legal disclosure — a logo in the corner is not Article 50's perceivable label, and it is not Instagram's AI-generated profile badge.
Platform stamps are a third object. Downloading a Reel or a TikTok usually burns that app's mark onto the file. Re-uploading the stamped export is one of the loudest unoriginality signals. Export from the source. If you need a viewer-facing line, write it as type in the safe area, not as a generator bug you hope a crop will keep.
In practice
- Treat a watermark toggle as the visible corner mark. It will not embed SynthID or attach a C2PA manifest.
- Do not crop a corner to 'remove AI.' Invisible marks and manifests are not in that corner.
- Never re-upload a file that already carries another platform's stamp.
The mistake to avoid
Calling any AI badge a watermark. A platform overlay, a C2PA tick, and a logo in the frame are three different objects.
Related terms
Watermark
Watermark meaning: a mark on generated media that identifies the source, either visible on the picture or embedded in the file.
SynthID
SynthID is Google DeepMind's invisible watermark for AI media — a detector-readable signal in the output, not a logo in the corner.
Content credentials
Content credentials are a cryptographically signed record of who or what made a file and what was done to it, attached by a hash computed over its exact bytes — which is why the record breaks the moment those bytes change, rather than degrading gracefully.
Seed
Seed meaning: the number that sets the random starting noise so the same seed and settings can reproduce the same output.
Prompt
Prompt meaning: the written instruction a generative model reads to decide what to make. The one input almost every model needs.
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