This is a WordPress plugin that turns your 404 "page not found" error into a page devoted to helping find missing children.
Plugin Tag: missing
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Check Missing Featured Images
Checks whether some posts are missing their featured images, tipically after a migration from another site.
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PlaceHodor
Substitute/replace missing images by a default image. The plugin will (try to) display/generate the good size (width and height) of the missing image.
