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Pradeep Sonawane

Gmail Like Gravatar Fallback plugin converts default WordPress Gravatar into Gmail App like Gravatar which shows the initial letter of the user in a random background color.
<ul>
<li>You can also add your styling to your stylesheet to customize the default gravatar after activating the plugin. Once the plugin is installed, it detects the user gravatars which are not set and are default, then they will be converted to SQUARE ICONS with First Letter of User’s Name.</li>
<li>This plugin also keeps the default gravatar settings, so once plugin is deactivated, old setting will be applied again.</li>
<li>This will show Gmail APP like gravatars in Comments list and Users / Members list.</li>
<li>This plugin has no settings, it just uses converts the default Gravatars using jQuery.</li>
</ul>
Requirements: 
1. In the HTML markup, the Author Name should be sibling of Author Gravatar. 
2. The Author name should have “fn” class. <a href="http://impradeep.in/gmail-like-gravatar-fallback-wordpress-plugin" rel="nofollow ugc"></a>To know more click here…
Please note: Our default WordPress comments section already shows markup in the link above. 
So if want to use these Gmail like Gravatar Fallback in some other custom templates, then you can reform the structure to look like the above.

Gmail Like Gravatar Fallback

Gmail Like Gravatar Fallback plugin converts default Gravatar into Gmail App like Gravatar.

Matteo Manna

This plugin simplifies the life of WordPress users. 
Now users can add or remove their avatar simply using images from his Media Library. Simple to use, no additional functions required. Plugin available on <a href="https://github.com/MatteoManna/Simple-User-Avatar" rel="nofollow ugc">GitHub</a>.

Simple User Avatar

Great

This is just what I needed! Did never like the tie to Gravatar. And the little donation reminder doesn't bother me at all. :)
Kudos!

Great Little Plugin - Clean Code

Simple User Avatar helps users to add or remove their avatar using images from his Media Library.

Gmail Like Gravatar Fallback vs Simple User Avatar