無料 Gemini 透かし削除ツール オンライン
Gemini画像やVeo動画をドラッグ＆ドロップするだけ。キラキラロゴをぼかしゼロで瞬時に除去し、元の画質と音声を完全保持します。
Upload or drag your Gemini Image or Veo Video
Free Gemini watermark remover & Gemini video watermark remover • Supports PNG, JPG, WebP, MP4, WebM, MOV • Paste with Ctrl+V
Gemini の透かしロゴを消す 3 つのステップ
画像または動画をアップロード
Gemini画像（PNG、JPG、WebP）またはVeo動画（MP4、WebM、MOV）を選択またはドロップします。
位置とサイズの微調整
ロゴの位置が自動検出されます。拡大プレビュー画面で位置を確認・調整できます。
綺麗になったファイルを保存
「エクスポート」をクリックして、高画質な透かしなしファイルを即座にダウンロードします。
Before & After: Gemini Watermark & Logo Remover
Instead of blurry AI inpainting, our Gemini logo remover uses exact mathematical alpha unblending to subtract the transparent Gemini watermark mask pixel-by-pixel—restoring 100% of your original image quality.
← Drag slider to compare →
Visible Gemini Logo vs. Google SynthID™
Google applies two distinct layers of identification to AI-generated media. Understand the critical differences below.
| Feature | Visible Gemini Logo | Google DeepMind SynthID™ |
|---|---|---|
| Visibility | Semi-transparent white sparkle in corner | Completely invisible to human eyes |
| Primary Purpose | Visual consumer attribution & branding | Cryptographic AI provenance & safety tracking |
| Embedding Layer | Alpha channel overlay on top pixels | Interleaved digital signal in pixel/audio noise |
| Removal Method | Lossless reverse mathematical unblending | Requires specialized signal-level filtering |
| Visual Aesthetic Impact | Causes visual distraction on final media | Zero impact on color, sharpness, or clarity |
| Tool Action | ✅ 100% cleanly removed by this tool | 🔒 Preserved without corruption |
Who Uses Gemini Watermark Remover?
Built for professionals who need clean, watermark-free AI visuals for commercial and creative projects.
Designers & Freelancers
Deliver clean, watermark-free AI concept art, textures, stock visuals, and prototypes to clients without awkward third-party branding overlays.
Content Creators & YouTubers
Clean Veo 3 AI video snippets and Imagen 3 graphics for YouTube thumbnails, TikTok reels, Instagram posts, and motion graphics packages.
Digital Marketers & Agencies
Create high-converting landing page hero banners, social media ad creatives, and promotional assets with pristine corporate presentation.
AI Artists & Prompt Engineers
Showcase raw AI model fidelity and photorealism in personal portfolios without distracting corner watermark artifacts.
What This Tool Does vs. What It Doesn't Do
We believe in complete transparency about our technology, privacy boundaries, and operational capabilities.
What This Tool DOES
Capabilities & Guarantees
- Mathematically unblends transparent Gemini and Veo watermark overlays
- Restores 100% original background pixels with zero blur or smudging
- Processes all media 100% locally inside your web browser for complete privacy
- Preserves full original audio tracks and frame rates on video exports
- Automatically detects watermark size scale and corner position
- Provides live dual zoomed previews for sub-pixel fine-tuning
- Supports unlimited files with zero fees, subscriptions, or account signups
What This Tool DOES NOT DO
Boundaries & Privacy Protections
- Does NOT use blurry AI generative fill or lossy inpainting algorithms
- Does NOT upload or transmit your private photos/videos to any remote server
- Does NOT strip or alter Google DeepMind SynthID™ cryptographic metadata
- Does NOT compress or degrade the original resolution or bitrate of your media
- Does NOT inject any secondary watermarks, logos, or advertising into exported files
- Does NOT require software installations, plugins, or browser extensions
- Does NOT impose daily file limits or throttle download speeds
Supported Image & Video Formats
Engineered for full compatibility across all Google AI generation platforms, export resolutions, and media types.
| Format | Source AI Model | Max Resolution | Processing Speed | Key Capabilities |
|---|---|---|---|---|
PNG Image.png Most Popular | Google Imagen 3 / Gemini Pro | Up to 4K+ (e.g. 1536×1536, 2048×2048) | < 0.1s (Instant) | Lossless RGBA 24-bit/32-bit unblending |
JPEG / JPG Image.jpg, .jpeg Fully Supported | Google Gemini Web / Mobile | Standard HD & Custom Aspect Ratios | < 0.1s (Instant) | Preserves original color profile & metadata |
WebP Image.webp Fully Supported | Imagen 3 Web Output | Standard & High Resolution | < 0.1s (Instant) | Full transparency & lossless compression |
MP4 Video.mp4 Veo Optimized | Google Veo / Veo 3 Video AI | 720p HD, 1080p Full HD, 4K UHD | Real-time GPU WebCodecs | Full AAC audio track preservation |
WebM Video.webm Fully Supported | Google AI Studio Video Clips | Up to 60 FPS | Hardware-Accelerated | VP8 / VP9 codec support with audio passthrough |
MOV Video.mov Fully Supported | Apple QuickTime / iOS AI Exports | All standard frame dimensions | Hardware-Accelerated | Native browser demuxing & MP4 export |
Best Practices for Flawless Watermark Removal
Follow these simple recommendations to achieve pixel-perfect watermark removal on every single image and video.
Always Use Direct Source Downloads
Download the full-resolution file directly from Google Gemini or Google AI Studio. Avoid using screenshots, messaging app compressions (WhatsApp/Telegram), or downscaled social media reposts.
Keep Default 0.60x Gain for Imagen 3
Standard Google Gemini Imagen 3 images composite the watermark at exactly 60% opacity. The default 0.60x Strength (Gain) setting is mathematically tuned for 99.8% of official Gemini exports.
Verify Alignment in the Zoomed Cleaned Preview
Use the real-time dual zoomed preview cards to inspect the watermark corner at 4x magnification. If you notice any slight shadow or halo, nudge Position X or Y by 1px for exact sub-pixel lock.
Preserve Lossless PNG Format for Images
When exporting cleaned graphics, save as PNG whenever possible. PNG guarantees lossless compression, ensuring 100% of your restored background pixels remain bit-for-bit pristine.
Why Choose Our Gemini Video Watermark Remover & Logo Eraser?
100% Private & Client-Side
Our Gemini watermark remover processes all photos and videos directly in your browser. No files are ever sent to external cloud servers.
Google Imagen 3 & Nano Banana Support
Reverses Google Gemini's exact transparent alpha blending formula for Imagen 3 photos and Nano Banana watermark variants with zero blur.
Gemini Video Watermark Remover for Veo
Remove Gemini watermark from Veo MP4 videos frame-by-frame with high-speed rendering and original audio track preservation.
Live Alignment & Dual Preview
Fine-tune scale and coordinates with real-time feedback. Side-by-side zoomed previews ensure flawless Gemini watermark remover video alignment.
Universal Format Support
Easily remove Gemini watermark from PNG, JPG, WebP images, as well as MP4, WebM, and MOV video formats without compression artifacts.
100% Free & Unlimited Usage
Unlimited conversions with zero subscriptions, no sign-ups, and no secondary watermarks added to your cleaned output files.
よくある質問 (FAQ)
Gemini透かし除去ツールの仕組み、対応形式、プライバシーについて。