Condless

WooCommerce plugin that sets default attribute for variable products automatically if only 1 option is in-stock.
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Variable product of T-shirt with color attribute (White/Blue/Black) and size attribute (S/M/XL): 
If only Black T-shirts are in-stock: default color (Black), default size (none). 
If only Small T-shirts are in-stock: default color (none), default size (Small). 
If only White and XL T-shirts are in-stock: default color (White), default size (XL).
<h4>How It Works</h4>
<ol>
<li>Before product variations is displayed to the customer, the plugin will check each attribute, and if there is only 1 in-stock option it will be set as the default.</li>
</ol>
<h4>Features</h4>
<ul>
<li>Stock: Set option as default when it’s the only 1 in-stock.</li>
<li>Per Attribute: Set specific option as default in all products with that attribute (from the Edit Attribute screen)</li>
<li>Top: Set as default the first option of each attribute.</li>
<li>Out of stock: Disable out of stock variations.</li>
<li>Add to Cart button: In archive pages display for variable products the attribute name instead of: “Select options”.</li>
<li>Select options: In single product pages remove the select options text if default attribute is set.</li>
</ul>

Default Attributes for WooCommerce

WooCommerce plugin that sets default attribute for variable products automatically if only 1 option is in-stock.

Jesper van Engelen

<blockquote>
Please note that the functionality of this plugin is limited as of WordPress 4.4. As of WordPress 4.4, the user settings have prevalence over the default image settings specified using this plugin. Please refer to Trac ticket <a href="https://core.trac.wordpress.org/ticket/31467" rel="nofollow ugc">#31467</a> for more information about this change.
</blockquote>
Take control over your images inserted into posts! Choose to what page images inserted into posts link by default. Change the default size of inserted images. Default Image Settings adds options in the Media section of your settings for choosing the default settings for inserted images.
Providing a simple UI, this plugin allows you to choose the default selected size, align and Link To of images when inserting media into posts. The settings for changing the default settings are added to the <code>Media</code> menu under <code>Settings</code> in your Admin Panel.

Default Image Settings

Change default settings for image size, link to and align for images inserted into posts. Allows you to remove the link on images by default.

Default Attributes for WooCommerce vs Default Image Settings