Upsize an image for crops larger than itself

[TwoThirdsWater]

Please could the wordpress image handling introduce support for a zoom crop of images smaller than specified file sizes.

[markoheijnen]

What is the question here? What kind of changed do you need?

[TwoThirdsWater]

If you upload a small image, then request a larger file format (as specified using add_image_size) Wordpress will return a larger image, but not cropped to the ratio specified in add_image_size. As I understand it wordpress does not currently support 'zoom and crop'. This would be a useful function as the current set up can break layouts by returning incorrectly shaped images.

[markoheijnen]

Ah that way. WordPress doesn't do upscaling. In this case I'm not sure what the right solution would be.

#23713 is related

[TwoThirdsWater]

At the risk of stating the obvious, a solution would be to enable Wordpress to upscale, or at least add it as a configurable option. Whilst I understand all the arguments about loss of quality, this would be a valuable addition to the image handling set up (and not a hard one to achieve).

[markoheijnen]

You can already enable it by using the link mentioned in that ticket: ​http://wordpress.org/support/topic/wp-351-wp-image-editor-scaling-up-images-does-not-work?replies=3.

[TwoThirdsWater]

Good to know. Many thanks!

[markoheijnen]

Related: #13014

[SergeyBiryukov]

Related: #26381, #27910.

[ericlewis]

I support the idea of upscaling images so that an attachment never has a "non-existing" image size. This can break functionality in unexpected ways, and your typical user will not understand why a header image doesn't show up even though they uploaded one in their theme options page.

[wonderboymusic]

Duplicate of #19872.