I have a very large Wordpress image bank (over 600 images, all in use...!) and a new development will mean that i would like to change some of the thumbnail settings.

I have at the moment

set_post_thumbnail_size( 75, 75, true );

In the functions, which of course means that the thumbnail is cropped to fit. I would like to change this so that the thumbnail is scaled, rather than cropped

set_post_thumbnail_size( 75, 75);

But will this change the current images i have? If not, is there a way of doing this?


1 Answer 1


The Regenerate Thumbnails plugin will go through your media library and re crop all your images.


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