Add date stamp on photos

Good morning, is it possible to insert automatically a date stamp on my photos ? I have several photos from different cameras or telephones and I would like to have the taken date on the printed photos.
Do I need a third party software or can I do this by Directory Opus?
Regards

As in modifying the image data so the date is printed on top of it when you view the image? Or do you mean adding the date to the filenames?

Thank you Leo, modifying the image, so the date is printed on the photos (in a bottom corner)

That’s not something Opus has built-in. It’s possible to make a button in Opus which would do it using image editing tools that have a command line interface. (E.g. ImageMagick is probably capable of doing it.) But those may require some reading and fiddling to set up to do what you need.

ok, thanks. May you send me an example of script, just as starting poin ? Or please, suggest me, how to search for an example of a button that do this ?

If you search this forum, you'll be able to find examples of scripts calling ImageMagick.
If you want anything more specific, I'd recommand linking your account.

This is a time consuming job but this tutorial might help

Thank you all for the help