Where to install a lab's profile on Mac

[Slobodan Blagojevic]

What are they asking for?

Emphasis mine:

File format
WhiteWall accepts the file formats JPG and TIF.
Uploaded files should ideally be 300 DPI, 8-bit, and have an embedded sRGB color profile. If you don’t know what any of that means, then just leave it to us! Your image files will, of course, be automatically checked as to whether or not they are suitable for what you’re ordering, and then they will be produced in the highest quality.

Color space
Your files may be uploaded in RGB or in CMYK. CMYK files will be converted into RGB in the production process. If a color profile is not attached to the file, we will assume that your file has an sRGB profile. For grayscale files, we use GrayGamma2.2 as a basis.

Color management for professionals: ICC profiles
The goal of a consistently deployed color management system is to ensure the most authentic reproduction of an image possible, using any printing device. For every technique WhiteWall uses to produce prints and copies, there is an ICC profile available for you to download.

The whole page is here.

[digitaldog]

You're screwed  (into sRGB). There's nothing to soft proof. There is no reason to have their profile.

[Slobodan Blagojevic]

You're screwed  (into sRGB). There's nothing to soft proof. There is no reason to have their profile.

They do say: "If a color profile is not attached to the file..." meaning (I hope) that if it is attached they will honor it?

Then the question becomes which profile to attach, working-space (say ProPhoto), or output-specific (say their "Direct print on brush aluminum")?

[digitaldog]

They do say: "If a color profile is not attached to the file..." meaning (I hope) that if it is attached they will honor it?

No, they assume sRGB for untagged documents (profile is not attached).

Uploaded files should ideally be 300 DPI, 8-bit, and have an embedded sRGB color profile.

They expect sRGB.

[Slobodan Blagojevic]

Thanks, Andrew, appreciate the input.