What this site stores
The simulator is a set of static files that run in your browser. There is no account, no database and nowhere for your load data to go. This page names everything it writes and the two requests it makes off your machine.
It runs on your machine
- No account, no email address, no sign-in
- No cookies. The site sets none, and reads none
- Page views are counted without cookies, without an identifier kept in your browser, and without advertising
- Your dimensions, quantities and saved scenarios are never transmitted — the simulator’s own code contains no network calls at all
Four keys, on your device
The simulator writes these to your browser's localStorage so your setup survives a reload. They stay on the device that wrote them and are readable only by this site.
clStateV1
The current setup: transport unit and its interior dimensions, pallet and box dimensions, layers, tiers, parts per box, part weight, which panels are open, the zoom level and the view angle.
clScenariosV1
Scenarios you have saved by name, each holding a full copy of the setup above plus the date you saved it.
clShowEmptyV1
Whether the empty-space overlay is switched on. A single character.
clThemeV1
Your light or dark choice, shared across every page on the site.
If storage is unavailable
Every read and write is wrapped so that a private window, blocked site data or a full disk cannot break the tool. It runs normally and simply forgets your setup between visits.
Removing it
Reset to defaults in the Cargo panel clears the current setup but deliberately keeps your saved scenarios. To remove everything, clear site data for this domain in your browser settings — there is no server-side copy to request the deletion of.
Share codes
A share code is your setup and scenarios encoded as text in your own browser. It is not uploaded anywhere. Wherever you paste it, that destination sees it — so treat a code as you would the dimensions and quantities inside it.
Two external requests
Google Fonts. The pages load two typefaces — the stylesheet from fonts.googleapis.com and the font files from fonts.gstatic.com. Your browser makes those requests directly, which means your IP address, user agent and the referring page reach Google, governed by their privacy policy rather than this one. Nothing about your load is included.
Vercel Web Analytics. A small script counts page views, so we can see which pages are actually used. It records the page you opened, the page you arrived from, and coarse device and country information. It sets no cookie and keeps no identifier in your browser, and nothing about your load — dimensions, quantities or saved scenarios — is included. Vercel handles it under their own privacy terms.
Those are the only two requests the site makes to anyone. The simulator itself makes none: its code contains no network calls at all, which is why your load data has nowhere to go. If you would rather the fonts were not fetched either, they can be self-hosted alongside the other files and the stack falls back to a real system face without them.
Hosting
The files are served by Vercel, which like any web server records ordinary request logs — IP address, timestamp, the page requested and the user agent. That is standard server operation and is separate from anything the simulator itself does.
This page describes how the software behaves, verified against the source rather than written from intent. It is not legal advice and it is not a substitute for a privacy policy reviewed for the jurisdictions you operate in.
Last updated 20 September 2026.