Force an image transform to images inserted into Redactor I know this essentially does the trick, however I was hoping I could apply a custom transform to all image assets if one hasn't been defined by the user. 

The problem I have is trying to convey the importance of defining image transforms to my "less-than-savvi" clients. 

So, as a fallback I'd like to know if I can query any images and apply an image transform. I feel like this might be a step in the right direction, but not sure what to do next:

{{ include(template_from_string(entry.body)|raw) }}


Cheers.
I wrote a plugin called Retcon which is able to apply bulk image transforms to images in HTML/Redactor content:

{{ entry.body|retconTransform({ width : 1024 }) }}
{{ entry.body|retconTransform(myAwesomeTransform) }}


There's currently no way to tell Retcon to only transform images that hasn't already been transformed, though – so this might not be exactly what you're looking for.