Sam observed:
>I have found that some www browsers and some graphics viewing programs
>do not recognize a JFIF or a JIF or a JIFF. I just rename the image file
>and give it a JPG extension, and that is the work-around that solves the
>problem for me. I don't know if anyone here knows for sure if there are
>really any differences among JIFs, JIFFs, and JPGs. We had this discussion
>on the list about two years ago, but no definite conclusions were drawn as
>far as I can recall. I think it was I who brought the matter up. Opinions
>were ample.
The Help for PaintShopPro shows that JIFs and JPGs may be saved at the
same color-depths (8bit-gray and the more usual 24bit color) and a quick
test showed the file sizes produced to be identical.
Looking at other formats, TIFFs are very slightly poorer in compression
than GIFs, but are readable (at least in B/W) by fax software.
PNGs may be saved at the higher color-depths of JPGs, but without the
degradation. The compression algorithm is slow, but files about 15% smaller
than GIFs may be produced, though 2 - 4 times larger than JPGs :-(
On other occasions the PNG may have a file size over 10% greater than the
equivalent GIF. Don't ask me why.
Hope that's ample enough for now...
Jake
