.htaccess

<IfModule mod_rewrite.c>
  Options +FollowSymlinks
  RewriteEngine On

  # Adaptive-Images -----------------------------------------------------------------------------------

  # Add any directories you wish to omit from the Adaptive-Images process on a new line, as follows:
  # RewriteCond %{REQUEST_URI} !ignore-this-directory
  # RewriteCond %{REQUEST_URI} !and-ignore-this-directory-too
  
  RewriteCond %{REQUEST_URI} !assets

  # don't apply the AI behaviour to images inside AI's cache folder:
  RewriteCond %{REQUEST_URI} !ai-cache
    
  # Send any GIF, JPG, or PNG request that IS NOT stored inside one of the above directories
  # to adaptive-images.php so we can select appropriately sized versions
  
  RewriteRule \.(?:jpe?g|gif|png)$ adaptive-images.php

  # END Adaptive-Images -------------------------------------------------------------------------------
</IfModule>