SWFTools is a collection of command-line utilities and libraries for creating, converting, and manipulating Adobe Flash (SWF) files. The core functionality includes converting PDF, images (JPEG, PNG, GIF), audio (WAV, MP3), and video (AVI) into SWF format, as well as extracting and analyzing SWF content. The architecture is modular, built around an abstract graphics device interface (gfxdevice_t) that allows rendering to multiple backends (SWF, PDF, OpenGL, text, bitmap), and a corresponding source interface (gfxsource_t) for reading different input formats. The codebase is predominantly C with some C++ and Python components, and includes a full ActionScript 3 compiler, MP3 encoders (LAME and BladeEnc), a polygon boolean operations library, and a 2D antialiased rendering engine (Libart). A wxPython GUI provides a graphical frontend for PDF-to-SWF conversion. While the project is functionally complete and demonstrates strong engineering in areas like device abstraction and computational geometry, it is heavily tied to the now-deprecated Flash platform and bundles several outdated third-party libraries, resulting in high technical drift.