Publisher export pdf print options explanation

[Etdronehome]

I am exporting my document for printing and used pdf export for print option in Publisher. After reviewing the tutorials on print export the presenter mentions using PDF/X 4 for CMYK printing and print for web as another option. I am not sure when to use one vs the other. 

Any help would be appreciated.

Thanks in advance.

Rich

[v_kyr]

Well just make yourself clear what and where the difference is, if you export a document for printing on a physical device like a printer (thus color wise CMYK printing via a printing service, or some printer device on paper), or instead for the web and so namely for devices like computer screens (with sRGB color support) for online reading.

[Etdronehome]

V_kyr

Sorry I misstated my question. What I meant to ask was pdf for print vs pdf/x4. My document was developed in cmyk. So if it was done in rgb will pdfx4  convert it? I took my document to a printer to get an edge to edge proof and used pdf for print and it looked great, colors very saturated. The print didn’t ask any questions - he just said give me a pdf.

So what does PDfx/4 do differently or better? Both options have a “more” button.

Again the tutorial on this topic does not go into much depth.  

Thanks again

Rich