Blog Post Schema is a simple, light-weight, powerful plugin that generates schema data structure for each article, blogpost, and breadcrumbs that is active on a single post page.
Blog Post Schema is open-source and free. It comes with the following features-
Once you install and activate the plugin, it will automatically generate Schema Markup (JSON-LD) for each BlogPost, Article, Breadcrumbs. The markup will be available just for a single post view. You can follow the Google Data Checking tool to check out its activity. Go to Google Structured Data Testing Tool and paste your single post URL to check out.