Untransform
The Untransform plugin replaces image transform URLs with a placeholder image or with a base URL prefix.
This can be especially helpful when working in a development environment in which the image assets do not exist. Rather than getting the broken image icon and pages taking forever to load due to invalid image transforms, display a placeholder image or the correct image transform from the live site.
Free
Package Name
To install this plugin, search for its package name on the Plugin Store and click “Install”.