Flash Optimizer enables you to to compress your SWF files by up to 60-70%, using algorithms of vectors, shapes, morphing, Z-buffer, fonts and other optimizations. The program offers several presets, ranging from basic compression without quality loss to strong compression with some quality loss. You can preview the result side-by-side in the built-in player, and also frame-by-frame with zooming options. The parameters of the optimization process can also be customized if needed, to achieve the results you want. The results may vary depending on the Flash file content, we had some great results with more than 50% reduction, and others with just a few percent.