Download the file for your computer. These install PyQt6 and Sloth Web into a SlothWeb folder in your home directory.
installer_mac.command. If macOS blocks it: Right-click → Open. Or in Terminal: chmod +x installer_mac.command && ./installer_mac.commandchmod +x installer_linux.sh && ./installer_linux.shpip install PyQt6 PyQt6-WebEngine requests pillow pillow-heif pillow-jxl-plugin then python SlothWeb-3.2.py.sh file is just text, so Finder opens it in TextEdit. The .command file is what Terminal runs. After download it still needs execute permission: chmod +x installer_mac.command then ./installer_mac.command.