画像透かし - Free Online Tool | PivaBox

テキストまたは画像の透かしを写真に追加——位置、不透明度、タイリングを制御

How to Use Image Watermark Tool

1. Upload your source image by clicking the upload area or dragging and dropping a file onto it
2. Choose Text Watermark or Image Watermark, then configure font/color/opacity or upload a watermark image with scale and opacity settings
3. Set the Position from the 9-point grid or use Tile mode to repeat across the image, adjust margins, then click Download to save as PNG

Frequently Asked Questions

Is Image Watermark tool free?

Yes, PivaBox Image Watermark is completely free to use. There are no charges, subscriptions, or hidden fees. All processing runs locally in your browser.

Are my images uploaded to a server?

No. All watermark rendering happens entirely in your browser using the Canvas API. Your images never leave your device, ensuring your files stay private and secure.

Can I use both text and image watermarks at the same time?

The tool currently supports one watermark type at a time. You can switch between Text and Image modes using the tabs. If you need both, you can apply one watermark, download the result, then upload it again and apply the second watermark.