Welcome to the Cyanide Project!
Cyanide is a shaderpack for Optifine and Iris, which focuses around the vanilla style of Minecraft.
It's meant to be used by users with weak PCs, or people that want to use simple shaderpacks during mini-games such as Duels.
It also features many tonemap operators, and a lot of customization.
If that wasn't enough, there's also a bloom effect, in case you want things to glow up a bit.
Cyanide also allows new users to create their own shaderpacks, using this shaderpack as a base.
Agreement
The agreement file can be found in the root of the shaderpack.