Including external assets (images) in packing slip HTML

Store Design
1

I am trying to link to an external barcode generator within my packing slip URL and i have realised any link to an external URL is not pulled into the packing slips.

For example…

<img alt=‘Barcode Generator TEC-IT’ src='https://barcode.tec-it.com/barcode.ashx?data=1001&code=Code128&translate-esc=on’/>

The barcode renders in you look up the URL in your browser but not in the packing slip. Infact I can change the URL to any external image and it will not render. Obviously images uploaded to the shopify assets library do image.

Is there a restriction on external URLs or a setting that can allow them?

KR Nick

2

I have a similar problem.

I found in the description, external images in the packing_slips doesn’t allowed to be: https://help.shopify.com/en/manual/shipping/setting-up-and-managing-your-shipping/packing-slips-variable-list#images,

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Did you find any possible solution to avoid it?