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author | 2020-08-07 15:55:35 -0700 | |
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committer | 2020-08-07 16:30:34 -0700 | |
commit | aa54c2ef31e01282d18b9e5eb5f6b86e93d062ca (patch) | |
tree | 0814eff4118f7e15670acd6b7e6f651f185dec99 | |
parent | AttachmentFilter: Exclude php files as well (diff) | |
download | bugzilla-aa54c2ef31e01282d18b9e5eb5f6b86e93d062ca.tar.gz bugzilla-aa54c2ef31e01282d18b9e5eb5f6b86e93d062ca.tar.bz2 bugzilla-aa54c2ef31e01282d18b9e5eb5f6b86e93d062ca.zip |
extensions/Gentoo/web: remove junk from PNG filegentoo-5.0.6.10
Optimize the size of `gentoo_org.png` by removing all non-visual
information and compressing the file better losslessly.
The old file contained significant data in PNG chunks of type ancillary
& private (see libpng reference) types prVW, mkBF, mkTS, mkBS, mkBT.
They were clearly created by Adobe Fireworks CS3.
`pngcrush` implicitly removes those, but does not remove textual information by
default, which was ALSO inserted by Adobe Fireworks. The `sBIT` chunk is not
needed in our use case, leaving `pHYs` as the only non-critical chunk per the
PNG specification. `pHYs` is kept because it provides DPI information needed
for HiDPI displays.
```
pngcrush \
-reduce \
-brute \
-rem tEXt \
-rem iTXt \
-rem sBIT \
gentoo_org.png.old \
gentoo_org.png.new
```
Size:
Before: 47637
After: 1986
Saving: 45651
Reference: http://www.libpng.org/pub/png/spec/1.1/PNG-Encoders.html#E.Use-of-private-chunks
Closes: https://bugs.gentoo.org/736308
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
-rw-r--r-- | extensions/Gentoo/web/gentoo_org.png | bin | 47830 -> 1986 bytes |
1 files changed, 0 insertions, 0 deletions
diff --git a/extensions/Gentoo/web/gentoo_org.png b/extensions/Gentoo/web/gentoo_org.png Binary files differindex a790fe908..c4621baf9 100644 --- a/extensions/Gentoo/web/gentoo_org.png +++ b/extensions/Gentoo/web/gentoo_org.png |