Batch Image Watermark

Add an image watermark to multiple photos at once. Control size, position, margin, and opacity.

Watermark Settings

Click to upload watermark

Watermark preview

Drag & drop images here, or click to select files

Supports JPG, PNG, WebP, BMP and more — multi-select enabled

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How to Batch Add Image Watermarks Online

Protect your photos and brand your images with our free batch image watermark tool. Upload your watermark image (logo, signature, or any graphic), configure the size, position, margin, and opacity, then apply it to hundreds of photos at once — all in your browser.

The tool uses a 9-position grid for precise watermark placement: any corner, any edge center, or dead center. The watermark size is set as a percentage of each image's width, ensuring consistent appearance across images of different sizes. Adjust opacity from fully transparent to fully opaque.

Use the preview feature to check exactly how your watermark will look on any specific image before processing the entire batch. PNG watermarks with transparency work best for professional-looking logo overlays. All processing happens locally in your browser — your images and watermark are never uploaded to any server.

Frequently Asked Questions

What watermark image formats are supported?

You can use any image as a watermark — PNG with transparency works best for logos and brand marks, as the transparent areas will show the original image beneath. JPG, WebP, and other formats are also supported.

Can I control where the watermark appears?

Yes. Use the 9-position grid to place the watermark at any corner (top-left, top-right, bottom-left, bottom-right), any edge center (top, bottom, left, right), or the center of the image. The margin setting controls distance from the edges.

Can I preview the watermark before processing all images?

Yes. Hover over any thumbnail and click the "Preview" button to see a full-size preview of how the watermark will appear on that specific image before batch processing.

How does the watermark size work?

Watermark size is set as a percentage of each image's width (5% to 50%). This means the watermark scales proportionally with different image sizes, ensuring a consistent look across your entire batch.

Are my images safe?

Yes. All processing happens entirely in your browser using the HTML5 Canvas API. No images or watermarks are ever uploaded to any server. Your files remain 100% private.

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