blips/compressing-images.md

aggressively ensmallening images for web

adapted from rek's described steps here

assuming that you are compressing to jpeg using GNU Image Manipulation Program (which i like to call g-image):

• scale down the image
  • scale the image to the smallest size you're willing to accept for your use case

the next steps are during the export step in g-image under the "advanced" menu:

• reduce quality
  • set compression quality as low as 20 (or as low as you can accept)
• smooth image
  • between .10 and .15
• progressive sampling
  • check "progressive" in conversion menu (makes the image load in a smoother way on slow connections)
• stripping metadata
  • strip it all
• color subsampling
  • set to 4:2:0