You can create an "app" from a website. The practical use of this feature is with your blog site. I created an app from my wordpress and blogger web site. You just need to open the wordpress page or blogger page in Chrome. Then click the menu icon on the right corner, choose tools then Add to Desktop.
Choose an appropriate name for your app. Perhaps something short and unique.
Once created the app for the web site is easily launched from your applications.
Ok. Another suggestion is to create an app specifically for creating new post. Again, open and navigate to your web site's new post / create new post page in Chrome. Click the menu icon, choose tools and Add to Desktop. Whenever you get that itch to tap a sentence or paragraph for a post, you can just launch the app for your web site.