All in One SEO and Yoast SEO are popular plug-ins for WordPress, but like any software, it will slow down your site. Instead use the KW optimizer feature to sort out your Keywords within the Title, Slug, Meta Description, and Content. Note that if you do get rid of All In One or Yoast plugins, do add a plugin for sitemap generation.
KWP indicates whether these have been optimized with the T,S,M and C icons on the RHSide of the KW list.
Instantly check your content – click the keyword icon for each KW in your list, and KRP immediately shows its position within the article as well.