I don't ask - I answer.

1. On the master page, in the topmost layer, create a white rectangle that covers all the text.
2.  Set transparency - multiplication.
3. Apply the master page to all pages.
4. Go to edit/flatten transparency settings. Create your settings with the "convert text to curves" option.
5.  Export to Pdf/X-1a 2003. In the dialog box, change the transparency flattening settings to your own.

et voilà

Disclaimer: I agree with the other commenters that you are better off exporting to PDF and using Acrobat to create outlines, or otherwise figuring out why your fonts aren't printing properly (most likely, your printer is using a crappy RIP that doesn't support the font).  There's 0 reason I can think of that a PDF/X4 wouldn't print properly on their printer if it works fine on yours.... unless there's something wrong with theirs. 

However, if you insist on converting all your text to outlines this code snippet should do what you want:

var items = app.activeDocument.allPageItems;
for (var i = 0; i < items.length; i++) {
    var item = items[i];
    if (item instanceof TextFrame) {
        item.createOutlines();
    }
}

Save it as a .jsx file in your User scripts folder and run it. It can take some time to run depending on the size of the file.

Hi toniat43741624,

this is the working link for the Acrobat way on Kasyan's website:

Create outlines from all fonts in acrobat

Kasyan Servetski

If you want to get a PDF file with all fonts converted to outlines, there is no need to outline text in InDesign since it can be done in the exported PDF.

http://kasyan.ho.ua/tips/acrobat/create_outlines_from_all_fonts_in_acrobat.html

Regards,
Uwe Laubender

( ACP )

Check out these scripts.

Also, you can do it in Acrobat.

The simple answer is no!

The simple and best way to convert all text in a document (in this case InDesign) is to export PDF from InDesign (preferably PDF/X-4) and in Acrobat Pro DC, use the Preflight profile Convert text to outlines. This comprehensively converts absolutely all text in the PDF to outlines and you still have live text in your InDesign document.

That having been said, there are very few and rare occasions in which there is any reason to convert text to outlines. If you have a print service provider that demands such conversion, it is indicative of a vendor who has ancient coal powered, steam driven RIPs or more likely is ignorant of current best practices, relying instead on old myths and legends. If your print service provider really believes this garbage about converting text to outlines, s/he likely is doing other foolish things in terms of end-to-end publishing workflows (such as demanding conversion of all images to CMYK and flattening all transparency). You may want to start looking for an alternative print service provider ASAP!

               - Dov

Is there a way in InDesign to convert all text to outline?

I'm sure this could be scripted, but no, it's not within the standard feature set of InDesign.

Please don't respond with I shouldn't be converting to outlines.

Ok, but will you tell us why are you converting to outlines?

~Barb

Just curious, why do you want to convert all text to outline?