Legacy ImageMagick Discussions Archive

lintianzhi

ImageMagick preserves the quality setting if it can. Normally that's appropriate, but when the image is severely downscaled as you have done, the low quality becomes noticeable. The fix is to do what you have done, namely specify a higher quality (90 should be enough; it's half the filesize and ...

lintianzhi

when i convert a jpg file with thumbnail, the result quality setting resulting to fuzzy image, and if i set quality manually the result looks good. so, i want to know how to get a suitable quality value when convert? thanks. remain is the image i test and how to reproduct it: file: http://ztest ...

lintianzhi

Solved. % is escape character, use %% to indicate %

lintianzhi

Code: Select all

 sha256sum -b /dev/null

can get same number stream..

lintianzhi

when I run command

Code: Select all

convert label:%# label.png

it get such image file

number in image:

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

lintianzhi

source image: http://test369.qiniudn.com/size.jpg
dest image: http://test369.qiniudn.com/size.webp

I just use command

Code: Select all

 convert -format webp size.jpg size.webp

But I dont know why.. thk

Is there bug or something ignored ?

Legacy ImageMagick Discussions Archive

Search found 6 matches

Re: wrong quality setting of result when convert with thumbn

wrong quality setting of result when convert with thumbnail

Re: label cannot handle "%#"

Re: label cannot handle "%#"

label cannot handle "%#"

get anti-color image when convert to format webp