Auto PY to EXE is a desktop application that provides a graphical interface for converting Python scripts (.py) into standalone Windows executables (.exe) using PyInstaller under the hood. The application is structured as a Python package with a web-based frontend served locally via the Eel framework, which bridges JavaScript UI components with a Python backend. The backend handles argument parsing, configuration management, file dialogs (via tkinter), and orchestrates PyInstaller execution, capturing logs and output to display in real-time in the browser UI. The tool supports a wide range of PyInstaller options, including onefile/onedir modes, console hiding, icon assignment, additional files, and many advanced flags, all exposed through a dynamically generated settings panel. It also includes version checking against GitHub API for both itself and PyInstaller, along with compatibility shims (e.g., for Python 3.12 bottle issues). The codebase is well-organized into distinct modules (validation, packaging, UI, dialogs, utils, shims) with a clear separation between Python backend and frontend presentation, though some cross-module coupling exists via a global config singleton. Tests cover basic packaging, library imports, and dependency availability, though they are limited in scope.