Italicizing text for Facebook

I've been italicizing text for Facebook posts using https://yaytext.com/bold-italic/, but it's kind of a clunky procedure and I'd like to automate it. After I started writing this message I realized I could simply create two variants, one to use in Chrome and the other to use in Opera (my two browsers), and I guess that's what I'll do. I still can't help but wonder, however, if it wouldn't be possible somehow to put a macro together that worked for both. My first thought was to try to get KM to open the web page in the same browser from which the macro was being launched; then I could just have KM close the YayText window and I'd be back where I started. Not knowing how to do that or if it's even possible, I guess I'll just make the macro for starting from Chrome and try to do all my Facebook in that browser (which I'm already doing anyway). Oh, but wait! I could put a conditional step at the beginning and have KM do one thing if I'm in Chrome and another if I'm in Opera. Sorry for thinking out loud here, but I'm still a little curious about whether I could get KM to open a web page in the same browser as the macro start point.

Thanks,
Roy McCoy

I'm having troubles with this even just running from Chrome. How do I get KM to wait reliably not only until the front browser loads, but also until the YayText page loads. This appears to be possibly complicated by a bunch of useless examples at the bottom of https://yaytext.com/bold-italic/, which makes the page take forever to finish loading. You don't have to wait for it all to load, though, before being able to paste text into the Your Text window. So maybe a timed pause? That seems inelegant, and if I make it long enough for it to work reliably I could probably do the conversion manually faster. Thanks.

I was getting ready to post the same question on August 12, but saw I already had. This is something I've continued to want to get automated, though I haven't continued to try to figure out how to do it. It's very convenient to be able to post formatted text in Facebook, and I think I've seen other places where I can do this as well though I don't remember at the moment where this might have been. But it doesn't matter, as Facebook is enough. Again, I want to copy selected text to the "Your Text" field at https://yaytext.com/bold-italic/, click on the Copy button at "Italic (sans)", return to Facebook and replace the original copied text with the newly formatted. There may be a somehow simpler way of formatting text for Facebook, but I haven't succeeded in finding it. Is this maybe a stumper for everyone? Thanks.