When you create a blog on Hashnode, you have total control over your blog's SEO.
The "SEO" tab on your dashboard allows you to customize your blog's meta tags, add keywords, automatically generate sitemaps, add your blog to search engines, and optimize your SEO presence.
Hashnode auto generates a sitemap for you, which you can submit to your Webmaster for better indexing on Google or Bing. You can find your sitemap at yourblogname.tld/sitemap.xml.