Colors used in PDF File

In French we say: "Everyone sees noon at his door"

(Chacun voit midi à sa porte)

When a graphics artist says that, they might mean all sort of things, but a programmer needs to define the task precisely.., or so it seems to me.

- You should use Convert Colors: there is a (ridiculously) small window in the upper right corner that gives you this info.

- Preflight allows the use of "Droplets", which is a kind of automation.

The question "how many colours" is ambiguous, and may be variable. Often the answer is millions.

Hi,

     Thank you for your reply.

     Can't do that using javascript?

Use the Preflight tool.