图片工具

添加水印

为图片添加文字水印,可自定义位置、字体、颜色和透明度

Watermark Adder

Drop an image or browse

Watermark Settings

32px
#ffffff
70%

Watermark Adder — Add Text Watermark to Images

Add text watermarks to images with custom position, font size, color, opacity, and rotation. Protect your photos, brand your content, or mark drafts — all processing in your browser.

FAQ

How do I add a watermark to a photo?

Upload your image, type your watermark text, choose position (center, bottom-right, etc.), adjust opacity (30–50% is typical for subtle watermarks), and download.

What opacity should a watermark be?

For protective watermarks: 30–50% opacity keeps the image visible while making the mark clear. For copyright notices on stock photos: 60–80% opacity makes removal harder.

Is my image uploaded to a server?

No — all processing happens in your browser via HTML Canvas. Your images never leave your device.

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添加水印 — 免费工具在线 | FreeTool24 | FreeTool24