Is it possible to set a gif image's tags using the Windows properties panel?
It currently seems working on jpeg, but not on gif files.
Answer
GIF files don't support EXIF tags and here's why.
There is a great misconception about JPEG files. Actually, JPEG isn't an image file format - it's a compression algorithm. JPEG specs don't describe how to pack compressed image into file. There are two (mostly compatible) formats for that: the older JFIF and the newer EXIF. Most modern software will also accept mixed formats.
So EXIF isn't a tagging system. Entire JPEG image files are in fact EXIF (or JFIF) files and tagging is one of EXIF's features. GIFs don't use EXIF at all, so you can't put EXIF tags on them.
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