# Packrift Packaging Fit Lab > Browser-based packaging fit, DIM-weight, and package-candidate planning utility backed by a static Packrift package library. Canonical URL: https://packrift.github.io/packaging-fit-lab/ Publisher: Packrift Publisher site: https://packrift.com Source repository: https://github.com/Packrift/packaging-fit-lab ## Primary Resources - Tool: https://packrift.github.io/packaging-fit-lab/ - Package library JSON: https://packrift.github.io/packaging-fit-lab/data/packrift-package-library.json - Data Package metadata: https://packrift.github.io/packaging-fit-lab/data/datapackage.json - Sample batch orders CSV: https://packrift.github.io/packaging-fit-lab/data/fit-lab-sample-orders.csv ## Use Use the Fit Lab to compare a current package against Packrift-derived cartons and mailers using fit, cube utilization, DIM-weight pressure, material assumptions, labor assumptions, and monthly order volume. The package library is a static source snapshot. Verify live price, inventory, freight, and fit approval on Packrift.com before purchasing or changing operational packaging standards.