Click the Open Shader Pack Folder button and move your BSL .zip file into that window.
The standard repository for BSL Shaders on CurseForge . 🛠️ Quick Installation Guide
To ensure you are downloading a safe version, use the official developer pages:
BSL Shaders is one of the most popular Minecraft shader packs because it offers a realistic, "warm" aesthetic without being as hardware-intensive as high-end ray-tracing packs. 📥 Core Download Links