Symphony.

Yes, but then you would add filetype-specific features to the generic upload field. If this feature is really that important I would suggest forking the upload field instead and create a new image upload field that will unify all the image specific fields out there and offer:

• a preview (with jCrop)
• crop the size on upload to a maximum size
• convert to RGB/warn if uploaded image was CMYK

or create an extension that will hook into the backend dialog and attach configurable warnings to the markup.

I did ask for an image specific upload field a while ago, one that had Reflection Field features, maybe this could all be bundled? Nick was going to do it, but he may have forgotten ;o)

Is the maximum size related to this thread?

Yes, but then you would add filetype-specific features to the generic upload field.

Oh, I wouldn’t add this to the upload field. I would add it to JIT itself: it should be no problem to add this feature either using PHP and delegate or using JavaScript.

Nevertheless I think it would be a good idea to replace the current core upload field with an enhanced version.

Advanced Upload Field?

Just mentioned Alistairs fork of the Unique Upload Field, the Image Upload Field. It’s just for images ;-) and supports downsizing of images and restrictions of size.