I'd like to ask the experts' opinion.
I want to distribute ~3500 bitmaps, so I'm looking to minimize the size of this bunch of files.
I used a sample of 140 bitmaps of various sizes, and ran a few experiments.
First, I just put the uncompressed bitmaps in a tar, and compressed with xz.
Then I thought I could compress the bitmaps beforehand (I tried PCX and PNG).
As you can see, the uncompressed bitmaps weigh 74 MB.
PCX saves ~10%
PNG saves ~50%
But then compressing these folders brings disappointing results.
The BMP archive compresses best, while the PNG archive doesn't compress at all.
As a result, the compressed BMP archive is much smaller than the PNG archive.
Is this expected?
Is there a way to distribute a small archive, containing compressed images?
Maybe I should try other formats than PNG and xz?
What do you think?