Konstantin Sokolov

Performs automatic keyword extraction. Adds a keyword taxonomy for browsing and a keyword extraction metabox in the post editing page. 
Available in English and Mandarin.

Eventflow Keyword Extraction

Automatic keyword extraction for SEO enhancement and improved user experience.

Fran Ontanaya

Word Stats adds a suite of linguistic diagnostics to help you keep track of your content and improve its quality.
The reports page lets you select an author and period to analyze, and displays:
<ul>
<li>The total word count.</li>
<li>The number and percentage of posts of each post type.</li>
<li>The top 20 keywords.</li>
<li>The percentage of posts of basic, intermediate and advanced readability level.</li>
<li>A graph with monthly word counts for each post type.</li>
<li>Diagnostics tables, with links to edit the posts that may be too short, too long, too difficult, too simple, lack relevant keywords or abuse certain keywords.</li>
</ul>
You can display the total word counts for each post type in your dashboard, widget areas and inside your posts with the [wordcounts] shortcode.
Word Stats also extends the info area of the post edit form with these live stats:
<ul>
<li>Relevant keywords. Common words can be blacklisted with regular expressions in the settings page.</li>
<li>A more accurate word count.</li>
<li>Color coded readability tests: Automated Readability Index, Coleman-Liau Index and LIX.</li>
<li>Total characters, alphanumeric characters, words and sentences.</li>
<li>Characters per word, characters per sentence, words per sentence.</li>
</ul>
Additionally, an extra column with the readability level of each post can be displayed in the manage posts list.
Word Stats includes basic support for Unicode scripts, including cyrillic, greek, arabic, hindi and japanese (mileage may vary).
Spanish and Catalan translations are bundled with the plugin.
Contact
Feel free to send feedback, requests or suggestions at email@franontanaya.com.
Or follow me on Twitter: <a href="https://twitter.com/FranOntanaya" rel="nofollow ugc">https://twitter.com/FranOntanaya</a>

Word Stats

Please update and make compatible to WP 4.5
you can do it. 3000 active users are waiting and me two



Please update and make compatible to WP 4.5

A suite of word counters, keyword counters and readability analysis for your blog.

Eventflow Keyword Extraction vs Word Stats