TL;DR
- Microsoft Paint supports both local and cloud image generation
- Paint and Photos also ship local AI models
- The two apps send the prompt to a remote server for moderation
- The server returns a GUID along with the moderated prompt
- The GUID is embedded into the locally generated image as an invisible watermark
- A separate visible-watermark setting does not control this invisible watermark
- On Copilot+ PCs, image generation is local but prompt moderation remains remote
- Microsoft discloses that Paint adds C2PA metadata to AI-generated images
- AI-generated image saves limited to C2PA-preserving formats: PNG, JPEG, GIF, and
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