Extract png alpha channel

Download and install the latest version of Filestar.
Right click on one or more Png file(s) on your desktop and select Convert with Filestar.
Type extract alpha channel in the search box.
Press Extract.

What is .png?

Name: Portable Network Graphic
Extension: .png
Format: Binary
Category: Raster Image
Developer: PNG Development Group
Description: A PNG file is an image file stored in the Portable Network Graphic (PNG) format. It contains a bitmap of indexed colors and uses lossless compression, similar to a .GIF file but without copyright limitations. PNG files are commonly used to store graphics for web images.
MIME Type: image/png
Sample: sample.png
Wikipedia: .png on Wikipedia

Last updated October 3, 2026