/usr/share/doc/optipng/caveat.txt is in optipng 0.6.4-1build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | CAVEAT EMPTOR
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(known bugs, problems or limitations)
Legend
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- Minor bug, limitation, or incompletely-implemented feature.
! Bug that may lead to a behavior different than expected,
but without any serious consequence.
!! Bug that may cause accidental data loss, security hazard,
or another serious consequence.
* Another problematic issue, that is not necessarily a bug.
Version 0.6.4 14-mar-2010
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- Lossless image reductions are not completely implemented.
(This does NOT affect the integrity of PNG files.)
Here are the missing pieces:
- The color palette reductions are implemented only partially.
- The bit depth reductions below 8, for grayscale images, are
not implemented yet.
- TIFF support is limited to uncompressed, PNG-compatible
color spaces (grayscale, RGB and RGBA).
- Metadata is not imported from the external image formats.
- There is no support for pipes or streams.
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