IMGKit
IMGKit copied to clipboard
Published
20 hours ago •
csquared
csquared
Generated file much bigger than needed
Hey there,
This is more of a question than an issue, but I couldn't find a Google Group-ish forum to ask questions.
I just generated this file:
2.1.2 :003 > File.open('test.png', 'wb+') {|f| f.write IMGKit.new('<html><body><ul><li>hi</li></ul></body></html').to_png }
The resulting image looked perfect, but it was huge. I ran in through convert with no options and:
ra:app(master) ryan$ ll test.png
-rw-r--r--@ 1 ryan staff 176553 Oct 24 09:24 test.png
ra:app(master) ryan$ convert test.png test-c.png
ra:app(master) ryan$ ll test*
-rw-r--r-- 1 ryan staff 733 Oct 24 09:29 test-c.png
-rw-r--r--@ 1 ryan staff 176553 Oct 24 09:24 test.png
ra:app(master) ryan$
The "compressed" image is the same resolution and looks perfect. file tells me this:
ra:app(master) ryan$ file test.png
test.png: PNG image data, 1024 x 43, 8-bit/color RGBA, non-interlaced
ra:app(master) ryan$ file test-c.png
test-c.png: PNG image data, 1024 x 43, 8-bit colormap, non-interlaced
ra:app(master) ryan$
I ran a more complex image (a screenshot of Ramen) and got similar results:
ra:app(master) ryan$ ll ramen.png
-rw-r--r-- 1 ryan staff 20468984 Oct 24 09:32 ramen.png
ra:app(master) ryan$ convert ramen.png ramen-c.png
ra:app(master) ryan$ ll ramen*
-rw-r--r-- 1 ryan staff 565074 Oct 24 09:32 ramen-c.png
-rw-r--r-- 1 ryan staff 20468984 Oct 24 09:32 ramen.png
ra:app(master) ryan$ file ramen.png
ramen.png: PNG image data, 1024 x 4988, 8-bit/color RGBA, non-interlaced
ra:app(master) ryan$ file ramen-c.png
ramen-c.png: PNG image data, 1024 x 4988, 8-bit/color RGBA, non-interlaced
Is there some default option I should be changing in IMGkit to get this better efficiency?
Here are the images in question:
test:
test-c:
ramen (which I won't embed because it's 20MB):
ramen.png
ramen-c:
