Apply Alpha Mask

Open in Editor

Apply a secondary mask image or channel source to modify the alpha transparency channel.

How to use Apply Alpha Mask

  1. Upload your image using drag & drop or click to browse.
  2. Adjust the settings using the controls above.
  3. See the result instantly — processing happens in your browser.
  4. Download your processed image as a PNG file.

About Apply Alpha Mask

Apply a secondary mask image or channel source to modify the alpha transparency channel. This tool is part of ImageToolbox's collection of free online image tools. It runs entirely in your browser — your images are never uploaded to our servers.