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ConvertBox

Add Watermark

Add text or image watermarks with custom opacity, position and rotation. Batch up to 50MB per file, output as JPG/PNG/WebP — no upload required.

©️

Select Image Files

Add watermark to multiple files at once

Max file size: 50MB • Multiple files allowed

or drag and drop · press Enter to browse

How to Use

  1. Select image files
  2. Enter watermark text and choose position
  3. Adjust opacity as needed
  4. Download watermarked images

All processing is done in your browser, and files are never sent to a server.

Frequently Asked Questions

Yes, you can set the opacity from 0% (invisible) to 100% (fully opaque) using the slider.
Currently, text watermarks are supported. You can position them in 5 different locations.
Yes, select multiple images to apply the same watermark to all of them.