Free Nano Banana & Gemini 2.5 Flash Sparkle Watermark Remover

Instantly reverse the 48×48px and 96×96px four-point star overlay added by Google Nano Banana, Gemini 2.5 Flash Image, and Gemini 3 Pro Image edits. 100% browser-local inverse alpha compositing—zero AI inpainting smudges and zero pixel re-compression outside the corner mask.

Drop Nano Banana or Gemini 2.5 Flash photos here (or press Ctrl+V)

Auto-detects 1K (48×48px @ 32px margin) & 2K (96×96px @ 64px margin) sparkles · Batch PNG, JPG & WebP ZIP export

Test instantly with a real calibrated sample:

Exact Sub-Pixel Sparkle Unblending

Remove Nano Banana & Gemini Sparkles in 3 Steps

When you edit a photo or generate character consistency shots with Nano Banana (Gemini 2.5 Flash Image), Google composites a translucent white sparkle in the bottom-right corner. Recover the exact pixels underneath:

01 · Drop or Paste Batch Photos

Load Single or Multiple Nano Banana Exports

Drag in JPG, PNG, or WebP files from Gemini 2.5 Flash Image, AI Studio, or Google Photos—or press Ctrl+V to paste directly from your clipboard.

02 · Auto 48px / 96px Tier Detection

Lock Onto the Exact 32px or 64px Corner Offset

Our resolution-aware engine checks whether either image dimension exceeds 1024px, selecting the calibrated 48×48px (@ 32px margin) or 96×96px (@ 64px margin) alpha lookup table automatically.

03 · Save Lossless PNG or Batch ZIP

Export Bit-Exact Restored Images Instantly

Over 99% of your canvas is never re-encoded, while the bottom-right sparkle region is algebraically restored to ~99.8% PSNR accuracy in under 50 milliseconds.

Still-Image Restoration Accuracy

Why Nano Banana Editors Prefer Inverse Alpha Over Magic Erasers

Using a diffusion "Magic Eraser" on a Nano Banana edit destroys fine textures like clothing fabric, typography, or skin pores in the bottom-right corner. Inverse alpha math restores the original RGB data:

Comparison Criterion	UnWatermarkGemini (Nano Banana Engine)	Diffusion / Magic Eraser Tools	Manual Clone Stamp / Crop
Corner Pixel Fidelity	Recovers true underlying RGB values (~99.8% PSNR)	Hallucinates fake textures & smudges fine details	Duplicates adjacent patterns or cuts off framing
48px & 96px Auto-Scaling	Automatic 1K (48×48 @ 32px) & 2K (96×96 @ 64px) calibration	Requires manual brush painting on every photo	Manual marquee selection per image
Batch Processing Speed	<50ms per photo · 1-click multi-image ZIP archive	8–20 seconds per photo in cloud GPU queue	Minutes of manual retouching per batch
Non-Watermark Canvas Integrity	100% untouched outside the 48px/96px corner bounding box	Often re-compresses the entire image as lossy JPEG	Depends on export settings

Nano Banana & Gemini Image Geometry

Calibrated 48×48px & 96×96px Sparkle Offset Specifications

Every native Nano Banana, Gemini 2.5 Flash Image, and Imagen 3 resolution follows a strict deterministic corner rule:

Standard 1K Tier (≤ 1024px)

48×48px Sparkle @ 32px Corner Margin

Applied to 1024×1024 square exports. The top-left anchor of the 48×48px sparkle mask sits at exactly (Width − 80, Height − 80), i.e., X: 944, Y: 944.

1024×1024 → 48×48px @ (X: 944, Y: 944)

Widescreen & Portrait 1K

1408×768 (16:9) & 768×1408 (9:16)

Standard widescreen and mobile portrait outputs also use the 48×48px @ 32px margin template when calibrated to the 1K generation tier.

1408×768 → (1328, 688) | 768×1408 → (688, 1328)

High-Res 2K Tier (> 1024px)

96×96px Sparkle @ 64px Corner Margin

Applied to 2048×2048 and 2304×1792 Gemini 3 Pro / Imagen 3 high-resolution exports. The top-left ROI anchor sits at (Width − 160, Height − 160).

2048×2048 → 96×96px @ (X: 1888, Y: 1888)

Verified Technical Answers

Frequently Asked Questions — Nano Banana Watermark Remover

Technical answers on cleaning 48px and 96px sparkles from Nano Banana and Gemini 2.5 Flash Image outputs.

What is the Nano Banana watermark in Google Gemini?

Nano Banana is the community and developer codename for Google’s Gemini 2.5 Flash Image editing and generation model. Like Imagen 3 and Gemini 3 Pro Image, it composites a translucent white four-point sparkle in the bottom-right corner of exported images.

How does the tool know whether to use the 48×48px or 96×96px mask?

Our spatial detector inspects your image dimensions and corner luminance gradient automatically, selecting the 48×48px (@ 32px margin) mask for standard 1K outputs and the 96×96px (@ 64px margin) mask for 2K exports.

Can I batch clean 50 Nano Banana photos at once?

Yes! Drag and drop an entire folder of JPG, PNG, or WebP images into the dropzone above, and click "Export Batch ZIP" to download all restored lossless PNGs in a single archive.