Photoshop CS4 JPG Optimization

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philbar's picture

I'm trying to shrink a few large images that are going to be displayed on my frontpage.

I'm confused about the following settings:

  • Embed Color Profile
  • Convert to sRGB

Both options increase the final image size a few kb. Are either one of them good to use for websites or should I leave them disabled?

Comments

Converting to sRGB (standard

forestmars's picture

Converting to sRGB (standard RGB) which is a (mostly) default colour space for the Web can be a bit confusing since it won't necessarily be the default colour space for viewing the image on your local computer— if you are using Windows/IE. (Also it's the only RGB colour space that cannot be expressed as a scalar, but let's not overly complicate things here.)

Short answer here is yes, enable sRGB for your images to appear correctly across most browsers.

If you are using sRGB, you won't need to embed a colour profile into your web images.

HTH, ~ Forest Mars

Thanks for the explanation. I

philbar's picture

Thanks for the explanation.

I just did another quick search and found a pretty good article on the topic:
http://www.earthboundlight.com/phototips/photoshop-cs4-color-management-...

In summary, it says:

  • Embedding a profile can be helpful in some circumstances, but it only ends up being ignored by web browsers.
  • Most web browsers treat all images as sRGB
  • If you create a jpeg out of an Adobe RGB image it will end up looking flat and washed out when posted online.

So based on that information and your recommendation. I decided to convert it to sRGB and disable the embed color profile option.

nostalgia

forestmars's picture

I just did another quick search and found a pretty good article on the topic:
http://www.earthboundlight.com/phototips/photoshop-cs4-color-management-...

Where in the world did you find that? Wow, I remember my first website…

Ya, it's a weird website, but

philbar's picture

Ya, it's a weird website, but the information seems correct. Maybe they stole if from another site, because I'm not sure they are even following those image optimization tips since the site design doesn't look like it has been updated from the 90s.

Image

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