How can I add SKU or select specific packaging on shipping labels?

Topic summary

A merchant wants to add SKU information or select specific packaging types directly on USPS shipping labels generated through Shopify, noting that other shipping platforms offer similar customization.

Current Limitations:

  • Shopify Shipping doesn’t support adding SKUs or custom product details to domestic carrier labels
  • Label customization is restricted by carrier requirements (USPS, UPS, etc.)
  • Weight displays round to pounds rather than showing detailed ounces

Suggested Workarounds:

  • Use packing slips to include SKU and product details (printable via Settings → Shipping and delivery)
  • Explore third-party shipping apps that allow packaging rules per product and can add internal notes to label margins
  • Implement order tagging by SKU or packaging type using Shopify Flow for warehouse staff guidance

Status: The issue remains unresolved, with the original poster expressing frustration about printing additional paper for packing slips and considering leaving Shopify for platforms offering this functionality. Another user has also requested this feature be added.

Summarized with AI on October 23. AI used: claude-sonnet-4-5-20250929.

This is a cheap copout answer. Other USPS shipping companies have some info
similar to what I am asking on there labels. So your answer is wrong, also
you have an “advertisement” at the bottom of your label, so your anser is
borderline insulting. You can have an accurate weight (yours rounds to lbs,
instead of the detailed ounces) you can do this. Think about your answer
you are encouraging me to print more paper just so we can know what goes
into the box associated with that shipping label, WHAT A WASTE

Please help
Since I have seen and know that what I am asking for can be done. I will
leave shopify to get it, but I’d rather stay.