Dirigible Studio

Tired of bloated SEO plugins?
Us too. That’s why we built Dirigible SEO. We’re search engine optimization experts who use professional keyword research and tracking tools to optimize and refine our content outside of WordPress. 
We don’t need a complex plugin to help us accomplish our SEO goals—we simply needed a way to edit our title tags and meta descriptions within a WordPress page or post.
Dirigible SEO uses the power of <a href="https://www.advancedcustomfields.com" rel="nofollow ugc">Advanced Custom Fields</a> to set up everything you need to manage your SEO.
See it in action https://www.youtube.com/watch?v=Dd7ZeIrZMC0&feature=youtu.be

Dirigible SEO

Free, fast and easy search engine optimization for web developers & SEO pros. Edit titles and meta tags quickly and easily. All killer, no filler.

CongBom

Generate most common meta tags to your WordPress site.
Open Graph (og) tag via post content and featured image:
<pre><code><meta property="og:url" content="..." />
<meta property="og:type" content="..." />
<meta property="og:title"content="..." />
<meta property="og:description" content="..." />
<meta property="og:image" content="..." />
</code></pre>
Meta description tag via post content or excerpt:
<pre><code><meta name="description" content="..." />
</code></pre>

Meta Tags Generator

It assumes that the theme's screenshot is in .png format. For smaller file size reason, I prefer using .jpg images for my theme's screenshots.

To set the record straight, .png is the preferred format, although other image formats are allowed. This is a direct quote from the Codex pages:

"Note that optionally, .jpg, .jpeg, and .gif are also valid extensions and file formats for the screenshot (though not recommended)." 

Other than that, this plugin is refreshingly small in size, and that's a good thing.

Almost there!

Automatic generate meta tags. Let your WordPress site optimize with Search engine & Social sharing.

Dirigible SEO vs Meta Tags Generator