GPTWATERMARKER

GPT Watermarker is a browser-based tool that removes all three types of watermarks embedded in Gemini AI-generated images: the visible sparkle logo, the invisible SynthID frequency signal, and the C2PA content credentials.
It supports images from the Gemini app, Nano Banana 2, Nano Banana Pro, and Google ImageFX, processing visible logo removal instantly in the browser and hidden watermark removal server-side.
The service offers a free tier for visible logo removal and a credit-based system for removing hidden SynthID and C2PA watermarks.