It is a free browser tool from ONNOFF that removes the visible Gemini AI logo from Gemini-generated images and Gemini or Veo videos. Processing runs entirely on your device using reverse alpha blending, so files are never uploaded to a server.

Yes. Choose Images for PNG, JPEG, WebP, or GIF. Choose Videos for MP4, WebM, or MOV from Gemini or Veo. Video mode processes frames locally and exports an MP4 at the same duration as the source. Prefer files under 100 MB; the first 60 seconds are processed for long clips.

Gemini blends a semi-transparent logo onto each frame using alpha compositing. This tool reconstructs the original pixels by solving the reverse alpha blending equation with a calibrated alpha map. It restores the underlying image instead of guessing with AI inpainting.

No. Every step runs in your browser. ONNOFF does not receive, store, or transmit your images or videos. Close the tab and the processed data is gone.

It targets the visible Gemini watermark, typically the semi-transparent logo in the corner of Gemini image and video outputs. It does not remove invisible SynthID-style watermarks or unrelated logos from other generators.

Yes. The ONNOFF Gemini Watermark Remover is free, requires no account, and runs locally. Use it for personal and commercial workflows that comply with applicable laws and Gemini terms.

ONNOFF packaged and branded this product experience. The core reverse-alpha engine is based on the open-source Gemini Watermark Remover project (MIT), itself a JavaScript port of work by Allen Kuo. Source attribution stays with those authors.