When you start learning Photoshop, you may encounter some problems that are just crazy. Especially when you open an image, but find in the palette of layers that it is an “index” layer, and not just a “layer” or “background”. You can’t do anything, you can’t even open this index layer by clicking on the lock icon.
You may be confused and perplexed: “Maybe I’m doing something wrong?” Read this article and you will learn what an “index” image is and how to unlock an indexed layer.
Indexed Color Mode (Indexed Colors)
How to unlock a layer (how to disable indexed colors in Photoshop?)
The first way: use the Photoshop image mode selector
Second way: use Paint to save the image again Continue reading