Yoast is the No.1 SEO plugin for WordPress since 2008. Designed to be simple, the plugin allows you to generate quality SEO-friendly content and get high search engine rankings.
The plugin offers some great features for free, everything from basic support for title & meta tags, XML sitemap creation, and canonical URLs to advanced features like implementing site breadcrumbs, integration with Schema.org, etc.
The Yoast plugin has content analysis built into the box and provides an SEO analysis and readability analysis for all the content you create. This ensures that your content is always optimized for search engines and humans together.
It also supports multiples languages like English, German, French, Dutch, Spanish, Italian, Russian, Indonesian, Polish, Portuguese, Arabic, Swedish, Hebrew, Hungarian, Turkish and Czech