OptiLite_1.21.4.zip is a release file of the Minecraft shader OptiLite-shaders, made for Minecraft 1.21.4. It was published on August 26, 2026 and is 0.5 MB in size. For the full description, screenshots and every other version, visit the OptiLite-shaders shader page.
How to install: Put the .zip into .minecraft/shaderpacks (do not extract it) and select it under Options → Video Settings → Shader Packs. Needs Iris or OptiFine.
