I found it easier to point my AI at JDownloader's source and have it rebuild the downloaders for certain hosts using python. It works the same without all the bloat.
Most editors format and highlight markdown syntax as bold, italic or strike through, but I have never seen the same thing for html. They only highlight the html-specific parts leaving the content unstyled.
If you want to try a model quickly, you'll have to pay the original provider at least 5 USD. With OpenRouter, you can pay pennies. If you decide it's not for you, then you don't have to leave the rest of your deposit with the provider.