Cookie policy
· v2.0
You can use the pages and calculator without statistics. We use only the first-party tools listed below, with no third-party advertising cookies or pixels.
| Tool | Purpose | Duration |
|---|---|---|
| ratio_enquiry | Necessary session cookie created when you start using the form. Supports the security token and duplicate-send prevention. Secure, HttpOnly, SameSite=Strict. | Until the browser session ends; the server session is valid for 2 hours. |
| ratio_privacy_v1 (localStorage) | Your choice to allow or reject statistics. Saved only after your choice. It is not an advertising identifier. | Up to 180 days. |
| First-party statistics | Only with consent, page-view and interaction events are sent. No additional tracking cookies; only daily aggregate counts are stored. | Aggregates up to 90 days. |
Privacy settings
“Necessary only” and “Allow statistics” receive equal prominence. Change your choice through “Privacy settings” in the footer. Rejecting stops further statistics events. Existing aggregates are not linked to individual visitors. If browser storage is unavailable, your choice lasts only on the open page.
Personal-data processing is described in the privacy policy.