How to remove copy of images of different sizes in wordpress?

Question

WordPress

When you upload a picture to a library on the server, you get many copies of this picture with different sizes. Perhaps this is done by some plugin, but I can not determine for sure.

Answer 1

By default, the following image sizes are registered in WordPress:

• thumbnail - thumbnail (changes from the admin panel)
  
• medium - medium size (changes from the admin panel)
  
• medium_large - moderately large (since WP 4.4.)
  
• large - large (changes from the admin panel)
  
• 1536x1536 - 2x medium_large (with WP 5.3)
  
• 2048x2048 - 2x large (with WP 5.3)
  

Additional sizes are registered using a function add_image_size()in your theme or plugin code
. You can remove a previously registered image size using a function. remove_image_size()
To physically regenerate a new set of file sizes, use the Regenerate Thumbnails plugin.