No, you can do that with NIP-23 Markdown formatting using clients like habla.news
Can I change the text format in a nostr:nprofile1qqs9xtvrphl7p8qnua0gk9zusft33lqjkqqr7cwkr6g8wusu0lle8jcpp3mhxue69uhkyunz9e5k7qgkwaehxw309aex2mrp0yh8qunfd4skctnwv46qewdfsa note?
Like change the header font size for title.
#asknostr
No, you can do that with NIP-23 Markdown formatting using clients like habla.news