PNG Compression Not Reducing the size of images

Questions and postings pertaining to the development of ImageMagick, feature enhancements, and ImageMagick internals. ImageMagick source code and algorithms are discussed here. Usage questions which are too arcane for the normal user list should also be posted here.
Post Reply
vdhiman23
Posts: 2
Joined: 2018-04-13T02:20:21-07:00
Authentication code: 1152

PNG Compression Not Reducing the size of images

Post by vdhiman23 »

HI,

I have certain png files. They are of size approx 1MB. I tried several command but they didn't work for me. Any suggestions. One is as below :

"C:\\Program Files\\ImageMagick-6.9.9-Q16\\mogrify.exe" -depth 8 -format png -define PNG:compression-strategy=2 -define PNG:compression-filter=0 test.png
Top
snibgo
Posts: 12159
Joined: 2010-01-23T23:01:33-07:00
Authentication code: 1151
Location: England, UK

Re: PNG Compression Not Reducing the size of images

Post by snibgo »

Perhaps your input is already compressed. Can you provide a link to it?
snibgo's IM pages: im.snibgo.com
Top
Post Reply

Return to “Developers”