画像透かし

ブラウザで画像にテキストまたは画像透かしを追加。複数位置と一括処理サポート。100%プライバシー保護。

ここに画像をドラッグ＆ドロップ、クリックして選択、または貼り付け (Ctrl+V)

画像が追加されていません

機能

100% Browser-Based

All watermarking happens in your browser. Your images never leave your device.

Text & Image Watermarks

Add text or logo image watermarks to protect your content.

Multiple Positions

Place watermarks at corners, center, or tile across the image.

Batch Processing

Apply the same watermark to multiple images at once.

How to Add Watermarks?

Upload images by dragging, clicking, or pasting.
Choose watermark type: Text or Image/Logo.
Configure watermark settings (text, size, color, position).
Preview the watermark on your image.
Click "Add Watermark" and download the result.

Common Use Cases

Copyright Protection

Add your name or logo to photos to protect against unauthorized use.

Brand Branding

Add your company logo to marketing materials for brand awareness.

Social Media

Add watermarks to images before posting on social media platforms.

E-commerce

Add store logos to product images for consistent branding.

Watermarking Tips

✓ Use semi-transparent watermarks for a professional look.
✓ Position watermarks in less conspicuous areas to avoid detracting from the main content.
✓ For batch processing, use consistent watermark settings across all images.
✓ Test with a low-resolution preview before applying to high-resolution images.

よくある質問

Is my image data sent to any server?

No, your images are never sent to any server. All watermarking happens entirely in your browser using the Canvas API.

What watermark types are supported?

We support text watermarks (with customizable font, size, color) and image/logo watermarks.

Can I batch process multiple images?

Yes, you can upload multiple images and apply the same watermark settings to all of them.

What positions are available for watermarks?

You can place watermarks at any of the four corners, center, or tile (repeat) across the entire image.