Add compress option for save png

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jPV
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Re: Add compress option for save png

Post by jPV » Sun Jan 05, 2020 3:23 pm

lazi wrote:
Sun Jan 05, 2020 1:20 pm
Interesting. As you mentioned PPaint, I checked it and it seems that it is the only program on Amiga which let you set png compression level.
There are others too, like Art Effect.

Tried to save the clown.pic example from PPaint in PNG format (compression level default 6) and here is the result:

PPaint PNG (6) - 46272 bytes
PPaint PNG (9) - 46252 bytes

Loaded the file and saved in PNG from ImageFX and Hollywood and here is the interesting part:

ImageFX PNG - 106489 bytes
Hollywood PNG - 102389 bytes
I saved the clown.pic from PPaint with Art Effect, there are compression levels from 0 to 9 in it.

ArtEffect PNG (0) - 192662 bytes
ArtEffect PNG (6) - 106532 bytes
ArtEffect PNG (9) - 106029 bytes

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airsoftsoftwair
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Re: Add compress option for save png

Post by airsoftsoftwair » Sun Jan 05, 2020 4:21 pm

jPV wrote:
Sun Jan 05, 2020 3:23 pm
I saved the clown.pic from PPaint with Art Effect, there are compression levels from 0 to 9 in it.

ArtEffect PNG (0) - 192662 bytes
ArtEffect PNG (6) - 106532 bytes
ArtEffect PNG (9) - 106029 bytes
In other words, Hollywood is even better than the best compression level in ArtEffect :)

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jPV
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Re: Add compress option for save png

Post by jPV » Sun Jan 05, 2020 5:55 pm

airsoftsoftwair wrote:
Sun Jan 05, 2020 4:21 pm
In other words, Hollywood is even better than the best compression level in ArtEffect :)
Yeah :) Only thing I can think that is there any use for non-compressed PNG images in some situation? But otherwise I don't see much point changing anything...

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