(There's no video for GIFConverter 2.x yet. Please contribute to MR and add a video now!)
GIFConverter is an utility that can open and save (convert) various 80's and early 90's graphics files, namely: GIF, Startup Screens, PICT, JPEG, TIFF, Paint, RLE, EPSF... All it does is allow you to convert them, but it has no real editing features other than changing settings like interlacing, 87a format compatibility, dithering, compression, bit depths (e.g.: B&W, 16 colors, 256 colors, etc...) and various resolutions, such as: 72dpi, 144dpi, 288dpi, 360dpi.
See also from the same time period: GraphicConverter
GIFConverter_2.3.7.sit (281.56 KiB / 288.31 KB)
GIFConverter v2.3.7 / compressed w/ Stuffit
At least 1MB of free RAM (recommended 2MB)
Mac OS 6.x - Mac OS 9.2.2
Emulating this? It should run fine under: Basilisk II