There are many Wordpress plugins which claim to be the best seo plugins. But, Yoast SEO plugin for wordpress seems to be very popular and offers a free version with a paid upgrade having more options.
Here is what they claim :
Quote:Since 2008 Yoast SEO has helped millions of websites worldwide to rank higher in search engines. Our plugin’s users range from the bakery around the corner to some of the most popular sites on the planet. Yoast SEO Free contains everything that you need to manage your SEO, and the Yoast SEO Premium plugin and its extensions unlock even more tools and functionality.
You can have a look at :
https://wordpress.org/plugins/wordpress-seo/
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