WordPress posts missing featured images? Let's help you recover them

After a version upgrade or switching to a new theme, what should you do if you don't see the option to upload a featured image when publishing a post? Don't panic, just add a piece of code to fix it. When you update WordPress or switch to a new theme and find that the featured image upload entry on your website has disappeared, this is usually because the theme code does not declare support for featured images. Simply copy the code below and add it to the theme's functions.php file.

// 特色图片框
add_theme_support('post-thumbnails');

If you don't know how to add it, you can use the following plugin for help:

• Safe method to add code to the functions.php file: Code Snippets

If you dislike setting featured images manually, you can use the following plugin to automatically set featured images for you:

• WordPress plugin for randomly displaying featured images: Random Post Thumbnails