How to resize image output by Metafields??

[YAJones]

Is anyone able to help me resize an image that is output onto my product page via a metafield in a custom liquid block?

FYI: I'm making these edits on an unpublished theme - Impact (not even bought yet - Impact). But I don't think these details should affect the solution. I stand to be corrected though.

Thanks in advance.

[YAJones]

Sure.

These are two screenshots. The first shows the image that's being output. This is what I want to resize. The second screenshot shows the Liquid block.

[YAJones]

Thanks @Sandramilly44 but how exactly do I do this: "Use the img_url filter in your Liquid block to adjust the size of metafield pictures on your product page."