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AI Powered · Free to Use

Remove ImageWatermarks

Easily remove watermarks, text, and unwanted objects from images using advanced AI technology.No registration required. Processed entirely in your browser to protect your privacy.

Or try these sample images
🚀 Fast Processing🔒 Local Processing💯 Completely Free✨ High Quality
Core Capabilities

PowerfulFeatures

Combining AI smart restoration with mathematically precise algorithms for comprehensive watermark removal

AI Smart Restoration

Powered by LaMa deep learning model for intelligent context-aware image repair

Gemini Optimized

Uses Reverse Alpha Blending for instant lossless Gemini watermark removal

Privacy Safe

All processing done locally in browser, images never uploaded to servers

Completely Free

No registration, no payment, no limits - free forever

Precise Control

Adjust brush size freely, precisely paint areas to remove

History Support

Multi-step undo/redo, saves up to 30 editing history steps

Multi-Format

Supports JPG, PNG, WebP and other common formats

PWA

Cross-Platform

Works on desktop and mobile browsers, use anywhere

How ItWorks

Core AI workflow handles all watermarks, Gemini detection is an optional enhancement

1

Upload Image

Drag & drop or click to upload, supports JPG, PNG, WebP

Smart Routing

Gemini Fast Track

When Gemini detection is ON

2
Auto Detect & Remove

System auto-detects Gemini watermark and removes instantly

3
Undoable Operation

Auto-processed result can be undone, supports revert to original

4
Continue Editing

Need to remove other content? Continue with AI eraser tool

Universal AI Processing

For all types of watermarks

2
Select Area

Use eraser tool to paint over the watermark area

3
AI Smart Fill

LaMa model analyzes context and fills the selected area

4
Preview & Compare

Real-time before/after comparison, supports continuous editing

5

Download Result

Download HD original when satisfied, supports lossless PNG export

See It in Action

RealExamples

Hover to see the removal animation and witness the powerful AI restoration

AI watermark removal example 1 - bag image before processingAI watermark removal example 1 - bag image comparison animation
Hover to preview
Playing
Example 1
Before/After
1
AI watermark removal example 2 - room image before processingAI watermark removal example 2 - room image comparison animation
Hover to preview
Playing
Example 2
Before/After
2
AI watermark removal example 3 - jacket image before processingAI watermark removal example 3 - jacket image comparison animation
Hover to preview
Playing
Example 3
Before/After
3

All examples above were processed in real-time by Clean PicGo in the browser

Tech Architecture

LaMaArchitecture

Professional image inpainting model running in browser via ONNX Runtime Web

Processing Pipeline

Image Input

Load and preprocess image

Mask Generation

Create binary mask from user painting

Model Inference

LaMa analyzes context and fills

Result Output

Scale back and blend with original

LaMa Model

Large Mask Inpainting

LaMa is a large mask inpainting model by Samsung AI Research, designed for handling large missing regions with high-quality, semantically coherent results.

Fast Fourier Convolutions - Expanded receptive field
Global Attention - Understanding image context
Perceptual Loss - Natural texture generation

ONNX Runtime Web

Browser-based AI Inference Engine

ONNX Format

Cross-framework standard

Web Worker

Background thread, non-blocking

WASM Runtime

High-performance local compute

Browser Cache

Local model storage

~200MB
Model Size
512×512
Internal Size
2-5s
Inference Time
100%
Client-side

💡 Supports any image size - auto-scaled for processing, restored to original resolution

Gemini Optimized

Instant Lossless forGemini

For Gemini AI-generated watermarks, we use mathematically precise Reverse Alpha Blending algorithm for instant lossless removal

Smart Auto-Detection

Automatically detects Gemini watermarks after upload, no manual operation needed

Instant Processing

No large AI model loading required, pure math calculation, extremely fast

Mathematically Lossless

Based on Reverse Alpha Blending, 100% original pixel restoration, zero quality loss

Undoable Operation

Auto-processing saved as editing step, supports undo, can continue manual editing

Reverse Alpha Blending

Mathematical Precision

Gemini watermark formula:

watermarked = α × 255 + (1 - α) × original

Reverse formula to remove:

original = (watermarked - α × 255) / (1 - α)

Using pre-captured watermark Alpha maps, we can precisely calculate each pixel's original value for lossless recovery.

Algorithm based on gemini-watermark-remover

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FAQ

Frequently AskedQuestions

Learn more about Clean PicGo's technical details and usage

Clean PicGo uses two technologies to remove watermarks: 1. LaMa AI Model: Works for all types of watermarks and unwanted objects, using deep learning to intelligently fill selected areas 2. Gemini-specific Algorithm: For Gemini AI image watermarks, uses mathematically precise Reverse Alpha Blending for lossless pixel recovery All processing is done locally in your browser - images are never uploaded to any server.

Have more questions? Feel free to ask on GitHub Issues