Watermark Removal

Remove Watermarks

๐Ÿงน

Drop images here or click to upload

Upload one or more Gemini AI generated images to remove their watermarks

PNG, JPG, WEBP โ€” Multiple files supported โ€” Ctrl+V to paste

How it works

Gemini AI adds a small visible watermark (the Gemini sparkle logo) to generated images using alpha compositing: each pixel is blended as watermarked = alpha ร— 255 + (1 โˆ’ alpha) ร— original. This tool reverses that formula to recover the original pixels.

  • 100% client-side โ€” your images never leave your browser.
  • Reverse alpha blending โ€” mathematically recovers original pixel values.
  • Adaptive detection โ€” finds the watermark even at non-standard positions.
  • Only removes the visible logo โ€” does not affect invisible SynthID watermarks.

Credits

Watermark removal algorithm ported from GargantuaX/gemini-watermark-remover (MIT License), itself based on allenk/GeminiWatermarkTool.