Image Watermark Tool
Add text or image watermarks to photos online for free. Customize position, opacity, and font.
Source Image
Watermark Type
Position & Style
Output
Preview
Upload an image to get started
このツールについて
Add text or image watermarks to your photos directly in the browser. Customize font, size, color, opacity, position, rotation, and tiling. Supports JPEG, PNG, and WebP output. All processing is local.
使い方
Upload Image
Drop or select the image to watermark.
Configure Watermark
Enter text or upload a logo, then adjust position, opacity, and style.
Download
Preview and download the watermarked image.
活用シーン
Copyright Protection
Add your brand or copyright notice to photos before sharing online.
よくある質問
What image formats are supported?
JPEG, PNG, WebP, GIF, and BMP as input. Download as JPEG, PNG, or WebP.