Q:

How can I tell Wordpress to reset all posted image sizes to the largest set width?

I've set the width of large files in Wordpress' Media settings, but how can I tell Wordpress to apply the setting to all the images I've already inserted in posts? It's limiting them to a previous setting of 500px wide.

A:

There is a plugin for resizing all your thumbnails. I think it is called the Rebuild Thumbnails plugin, or something similar

