Kay Joe

Important Aspects
<ul>
<li>The default featured image will show exactly how your theme shows it. That is if it appears besides the excerpt it will show there. It will not show on top of the excerpt or misaligned, as this plugin only changes the image and does not add any html attributes.</li>
<li>This simple plugin sets an image that has been already uploaded in the WordPress Media Library as the default Featured Image for all posts that do not have a featured image already set.</li>
<li>This plugin can also remove or unset an image that exists in media library and is set as featured image for one or more posts. This is the remove default featured image feature.</li>
<li>Your theme must already support post thumbnails for this plugin to work. This plugin will show the default featured image you set in same style and position as shown by your active theme. Only the image will be changed</li>
<li>If you are using a cache plugin, try disabling it and clear browser cache to see results. You can always go to a post and see whether the featured image has been set or unset.</li>
<li>Please deactivate any other featured image plugin before using this plugin. Also, if you have modified the code in your theme files to show a default featured image then please delete that code, else plugin will have problems</li>
<li>The following steps are recommended but not necessary.These may be required to set the size for the default featured image.
<ul>
<li>To Set a default featured image for a post, check the size of the featured image that your theme is showing. This can be dome by right click on the image->Choose view Image OR copy its link or address and open in new browser. Right click on the image and see its dimensions in image information.</li>
<li>If your theme’s functions.php file uses the add_image_size function and the size of the image uploaded to media library to be used as default featured image, is higher than the max size set for thumbnail by any of the _add_image_size_then the selected image to be set as default image will be resized and saved as a new image with size as the maximum size set to be used as thumbnail (not single post) by those functions.</li>
<li>It is recommended that the Settings of the small thumbnail in the Settings-Media and the size set by add_image size be kept same
<ul>
<li>After that please resize the image to be set as default featured to the smaller size (to optimize page load time) or resized exactly as the dimensions of smallest size in Settings->Media as set by the add_image_size function</li>
<li>Then uploaded the image to the media library and set it as default featured image using this plugin</li>
</ul>
</li>
</ul>
</li>
</ul>
<h4>Suggestions are welcome</h4>
<ul>
<li>Found a bug?</li>
<li>Something to be improved?</li>
</ul>
Contact me @kayjoe on WordPress.org or ano[dot]shani[at]gmail[dot]com

Default Featured Image Themed

Set an uploaded image as a default featured image for all posts without a featured image. Remove an image set as featured image for one or more posts.

WP Zone

annaqq

The Replace Image plugin adds a button to the Attachment Details screen which allows you to upload or select an image to replace the current image while retaining the URL and attachment ID. This allows you to easily swap in an updated version of an image without having to re-select it in theme settings pages, post/page content, or anywhere else where it might be referenced.
Important: Disable your browser’s cache and any WordPress caching plugins before use; otherwise, the plugin may appear not to work. See Tools > Replace Image for instructions.
If you like this plugin, please consider leaving a comment or review.
<h3>You may also like these plugins</h3>
<a href="https://wpzone.co/" rel="nofollow ugc">WP Zone</a> has built a bunch of plugins, add-ons, and themes. Check out other favorites here on the repository and don’t forget to leave a 5-star review to help others in the community decide.
<ul>
<li><a href="https://wordpress.org/plugins/product-sales-report-for-woocommerce/" rel="ugc">Product Sales Report for WooCommerce</a> – setup a custom sales report for the products in your WooCommerce store with toggle sorting options. Including or excluding items based on date range, sale status, product category and id, define display order, choose what fields to include, and generate your report with a click.</li>
<li><a href="https://wordpress.org/plugins/export-order-items-for-woocommerce/" rel="ugc">Export Order Items for WooCommerce</a> – export the order details for each sale in your WooCommerce store. Simplify order fulfillment, generate accounting reports in a few clicks, and download into CSV format for readability and universal compatibility with Export Order Items.</li>
<li><a href="https://wordpress.org/plugins/force-update-check-for-plugins-and-themes/" rel="ugc">Force Update Check for Plugins and Themes</a> -force Update Check for Plugins and Themes forces WordPress to run a theme and plugin update check whenever you visit the WordPress updates page</li>
<li><a href="https://wordpress.org/plugins/connect-sendgrid-for-emails/" rel="ugc">Connect SendGrid for Emails</a> – connect SendGrid for Emails is a third-party fork of (and a drop-in replacement for) the official SendGrid plugin</li>
<li><a href="https://wordpress.org/plugins/custom-css-and-javascript/" rel="ugc">Custom CSS and JavaScript</a> – allows you to add custom site-wide CSS styles and JavaScript code to your WordPress site. Useful for overriding your theme’s styles and adding client-side functionality.</li>
<li><a href="https://wordpress.org/plugins/disable-user-registration-notification-emails/" rel="ugc">Disable User Registration Notification Emails</a> – when this plugin is activated, it disables the notification sent to the admin email when a new user account is registered.</li>
<li><a href="https://wordpress.org/plugins/image-upload-for-bbpress/" rel="ugc">Inline Image Upload for BBPress</a> – enables the TinyMCE WYSIWYG editor for BBPress forum topics and replies and adds a button to the editor’s “Insert/edit image” dialog that allows forum users to upload images from their computer and insert them inline into their posts.</li>
<li><a href="https://wordpress.org/plugins/password-strength-for-woocommerce/" rel="ugc">Password Strength for WooCommerce</a> – disables password strength enforcement in WooCommerce.</li>
<li><a href="https://wordpress.org/plugins/donations-for-woocommerce/" rel="ugc">Potent Donations for WooCommerce</a> – acceptance donations through your WooCommerce store</li>
<li><a href="https://wordpress.org/plugins/shortcodes-for-divi/" rel="ugc">Shortcodes for Divi</a> – allows to use Divi Library layouts as shortcodes everywhere where text comes.</li>
<li><a href="https://wordpress.org/plugins/stock-export-and-import-for-woocommerce/" rel="ugc">Stock Export and Import for WooCommerce</a> – generates reports on the stock status (in stock / out of stock) and quantity of individual WooCommerce products.</li>
<li><a href="https://wordpress.org/plugins/random-quiz-addon-for-lifterlms/" rel="ugc">Random Quiz Generator for LifterLMS</a> – pull a random set of questions from your quiz so users never get the same question twice when retaking or setting up a practice quiz.</li>
<li><a href="https://wordpress.org/plugins/wp-and-divi-icons/" rel="ugc">WP and Divi Icons</a> – adds over 660 custom outline SVG icons to your website. SVG icons are vector icons, so they are sharp and look good on any screen at any size.</li>
<li><a href="https://wordpress.org/plugins/wp-layouts/" rel="ugc">WP Layouts</a> – the best way to organize, import, and export your layouts, especially if you have multiple websites.</li>
<li><a href="https://wordpress.org/plugins/wp-squish/" rel="ugc">WP Squish</a> – reduce the amount of storage space consumed by your WordPress installation through the application of user-definable JPEG compression levels and image resolution limits to uploaded images.</li>
</ul>
To view WP Zone’s premium WordPress plugins and themes, visit our <a href="https://wpzone.co/product/" rel="nofollow ugc">WordPress products catalog page</a>.

Replace Image

Old images and database entries remain, no links are updated to the new entries. I followed instructions -- no perceivable change. If it once worked, it no longer does.

Doesn't replace, just uploads new image

I was needing a plugin to enable the replacement of some broken media, tried others but they cannot do it, only replace existent media, and then Replace Image is the one that worked and fitted for my needs.

Great tool!

Upload a new version of an image without deleting the old image attachment, so that references to the image remain intact.

Default Featured Image Themed vs Replace Image