This article explains how to find, install, and use shaders in Minecraft for Windows.
How to Install Shaders on Minecraft – Complete Guide
Shaders for Minecraft are created by other players and uploaded to websites as a free download. Minecraft shaders contain all of the coding and visual assets needed to make changes to a Minecraft world, all compressed into a single MCPACK file.
Downloading and installing Minecraft shaders is relatively easy and doesn't require any hacking or installing third-party plugins or programs. For our example, I'll be using the WinterCraft shader (which I got from mcpedl).
Here's how to add shaders to Minecraft.