Welcome to WebmasterWorld Guest from 220.127.116.11
Forum Moderators: not2easy
Have heard good things about GIMP, but have not used it myself. Didn't realize it was freeware - guess I'll get a copy, lol
Well i recently discovered PNG and it's power. I am an avid user of Photoshop and am using verion 7 of it, but unfortunately Photoshop has a poor compression algo for PNG.
But i got a better, infact much better way out. Has anybody here tried pngcrush? Its a cool command line utility built for linux, but has a windows exe too.
Use photoshop to your hearts content, save as png from photoshop, then run the photoshop's png throught pngcrush.
pngcrush does a lossless compression and tries all possible filters to get the best possible cmopression.
I tried it myself. I made a image in photoshop with solid colors. Saving it to png gave me about 9.5 kb file....saving it to gif i got about 8 kb file..then i ran the 9.5 kb png via pngcrush and i got a file about 7 kb in size! thats about a 20% reduction insize. pngcrush has a LOT of options to tweak, so maybe i can get better..but i didnt have time to study it. Search for it on google. its on sourceforge i think.
-Checks different filter and compression methods to determine smallest size
-Fixes bad sRGB chunks produced by Photoshop 5.5
-Removes opaque alpha channels, sets all-gray images to grayscale
-Can fix bad CRC's, or remove unwanted anciallary chunks
-Can add gamma, transparency chunks, or resize color palletes
I will have to check it out. It seems to be a free utility and open source. I found it at pmt.sourceforge.net/pngcrush.
Maybe I'll switch formats for my personal site... I keep thinking it's time.
More research made me discover [members.lycos.co.uk...]
Its a GUI to the pngcrush command line! It is used WITH the actual pngcrush.exe to easily compress PNGs. I mailed the developer and he said it has just been made, so will improve in future. It is in Alpha right now, but worked well for me. Any reports?
As far as i know, its freeware too, and for Windows.