imgkit get height of image

Question

what I'd like to do is very simple. I have a code which uses a imgkit library to load some webpage image and then stores it. It looks like that:

kit = IMGKit.new(site, :quality => 5, :width => 1024)
img = kit.to_img(:png)
file = kit.to_file("#{Rails.root}/public/images/#{s2}.png")

I need to know the image height after loading in order to stretch canvas element behind it. Is there a way I can get the height ? Or if not, how could I achieve this without knowing the image height before loading, javascript ?

score 0 · Answer 1 · answered Apr 08 '16 at 12:03

0

relevant question,

Would following work?

kit = IMGKit.new(site, :quality => 5, :width => 1024)
img = kit.to_img(:png)
file = kit.to_file("#{Rails.root}/public/images/#{s2}.png")  

var img2 = new Image();       
img2.onload = function(){
  var height = img2.height;

  //do all remaining processing here

};
img2.src = file;

answered Apr 08 '16 at 12:03

user5226582

1,946
1
22
37

i forgot to add that i use rails, you mixed code from rails and js into one... maybe i could get the height using minimagick_gem, but I have not yet tried – user2229608 Apr 08 '16 at 12:10

score 0 · Accepted Answer · answered Apr 09 '16 at 09:05

0

Ok, I've figured it out. Mini_magick gem was a fine way how to do this.

answered Apr 09 '16 at 09:05

user2229608

45
1
9

imgkit get height of image

2 Answers2