图片加水印

功能说明What It Does

图片加水印工具可为图片添加文字或图片水印，支持平铺 / 九宫格定位，透明度 / 旋转 / 字号自定义，有效保护原创内容。

Add text or image watermarks to pictures, with tiled or 9-grid placement and adjustable opacity, rotation and size — to protect your content.

支持批量处理与 PNG / JPG 导出。

It supports batch processing and PNG/JPG export.

适合电商商品图、摄影作品、设计稿等需要版权保护或品牌露出的场景。

Great for e-commerce product images, photography and design work that need copyright protection or brand exposure.

无需安装图像软件，浏览器内即可完成加水印。

No image software needed — add watermarks right in the browser.

适用人群Who Should Use

电商卖家、摄影师、设计师等需要保护图片版权的人群。

Sellers, photographers and designers who need to protect image copyright.

自媒体、品牌运营需要批量给图片添加 Logo 或署名。

Creators and brand operators who batch-add logos or credits to images.

技术原理How It Works

通过 Canvas 绘制原图并叠加文字或图片水印，支持平铺与定位。

Draws the original on a canvas and overlays text or image watermarks, with tiling and placement.

导出使用 Canvas 生成 PNG / JPG，全部在本地完成。

Exports PNG/JPG via canvas, all done locally.

安全与隐私Privacy & Security

原图与水印处理均在本地完成，原图不上传，隐私安全。

Originals and watermarking are processed locally; originals are never uploaded, keeping them private.

使用步骤How to Use

1. 上传图片。Upload an image.
2. 输入文字水印或上传图片水印。Add a text or image watermark.
3. 调整位置、透明度、字号与旋转。Adjust position, opacity, size and rotation.
4. 下载带水印的图片。Download the watermarked image.

常见问题FAQ