Users who Dugg This
Norbert de Langen
13 Followers
Rahul Arora
47 Followers
honoredmuleNov 30, 2006
Reducing color palette to fewer colors than the number of unique colors in the original image IS lossy. It just doesn't look nearly so bad as other lossy compression types like mpeg (jpeg) unless it's really overdone.So really, yes. It is lossy.
dnasthegreatNov 30, 2006
Interesting.I tried it on several images... most of the images saved by quick-and-dirty (like ImageMagick's import tool) get pretty good compression. Near 50%.But for images saved in GIMP, I really don't get anything. 4kb shaved at the most. Usually much much less. (I may do another pass later with the -brute option, but it's not that big of an improvement.)Still, it's lossless and every byte saved is one less byte to transfer which is one less byte per visitor on bandwidth, so... why not?
nmaster64Dec 1, 2006
I like! I like!For the lazy, I created a zip executable to extract the newest version of pngcrush, it's readme, and the instructions (tweaked and fixed) to install it to the context menu:<a class="user" href="http://www15.rapidupload.com/d.php?file=dl&filepath=7644">http://www15.rapidupload.com/d.php?file=dl&filepath=7644</a>Just run the exe, then go to folder options and add the following command to your png's:"C:Program Filespngcrushpngcrush.exe" -e 2.png "%1"
bradl3yDec 1, 2006
It is not a unique string. It could only be a unique string if there were less or equal combinations of original content as there are possible hashes. There is a limit to the total number of possible hashes(the length of the hash), but there is no limit to the total possible original contents, which means two completely different blocks of text could create the same MD5 hash.
mtcool1988Dec 1, 2006
Its funny the .PNG Photo on the article is only 174 x 118 and still coming in at a high 11.37KB!, So much for that piece of s**t...
vdogDec 1, 2006
Personally, I use PNG Gauntlet ( <a class="user" href="http://brh.numbera.com/software/pnggauntlet/">http://brh.numbera.com/software/pnggauntlet/</a> ) which is basically PNGout with a GUI.
dalangalmaOct 12, 2010
The working URL for PNGGauntlet is http://pnggauntlet.com
joelhardiDec 1, 2006
If you have Fink, you can use it to easily install both optipng and pngcrush. Personally, I like to run optipng and then run advpng (which further optimizes the LZ compression) on the result. I don't think there's an OS X binary for advpng (part of AdvanceCOMP), but it's a really fast compile. More info on what's actually going on in the wikipedia link carl67ip posted above.
m4cb0yDec 2, 2006
PNGCrush compresses much more than Ping though, and Ping also doesn't get rid of the png gamma (<a class="user" href="http://user.fundy.net/morris/photoshop03.shtml)">http://user.fundy.net/morris/photoshop03.shtml)</a> which is the main reason I use pngcrush anywayIt would be great if someone could make an automator action for this.
Closed AccountDec 11, 2006
None of these come anywhere remotely close to another solution: embed the PNG in an SWF. This also circumvents the transparency problem in IE. A PNG in an SWF that's loaded via SWFObject ( <a class="user" href="http://blog.deconcept.com/swfobject/">http://blog.deconcept.com/swfobject/</a> ) still seems like the winner.
mediabbSep 26, 2007
look no further!close your google windows and click here.<a class="user" href="http://factorycity.net/projects/pngcrushrrr/">http://factorycity.net/projects/pngcrushrrr/</a> GUI and ALL! Cheers!
yanhughesJun 17, 2008
I just tried the "pngcrush", I manage to crush a png file from 256K file to 233K, no good! Any suggestions?
pnrlOct 23, 2008
<a class="user" href="http://pornel.net/imageoptim/en">http://pornel.net/imageoptim/en</a>
exaltstyaoneFeb 24, 2012
www.file-edu.com compress all education