ConPDS · Resources
Container inspection tools
Three utilities for everyday inspection admin — ISO 6346 check digits, photo batch prep, and shipper deposit modelling. No account required.
Notes
Check digit — client-side only; nothing is transmitted.
Photo downscale & ZIP — up to 50 images, 20 MB per file; processed in memory, not stored.
ROI calculator — client-side only; raw inputs are not sent to ConPDS.
FAQ
Do I need an account? ▼
No. All tools are public. The check-digit calculator and shipper ROI model run in your browser. The photo downscale & ZIP tool processes uploads in memory and does not store files after download.
How do I validate a container number? ▼
Open the check-digit calculator. Enter 10 characters to compute the check digit, or 11 to validate. Example:
CSQU305438 → CSQU3054383.How are photos named in the ZIP? ▼
Files are saved as
CONTAINER-01.jpg, CONTAINER-02.jpg, and so on inside a ZIP named after the container number you enter. See the photo downscale & ZIP tool.Is my data stored? ▼
No. Browser tools keep all input local. The photo downscale & ZIP tool only holds uploads in memory for the duration of the request.