I need to add the "2x" to the url attribute srcset in wordpress 4.4.2. Maybe you can do so using a function in the functions.php file?

I need to add the "2x" to the url attribute srcset in wordpress 4.4.2. Maybe you can do so using a function in the functions.php file?

• images
• retina

1 Answer 1

WordPress puts all resized versions of an image with the same aspect ratio into the srcset property. So if you need a "2x" image and one is not being generated already you could add an image size via add_image_size().

For the 2x image to be inserted in the correct circumstances you might need to tweak the sizes property via the wp_calculate_image_sizes filter.