Cookie Policy
Last updated: 5 June 2026
This page explains how Class Diagnostix uses cookies and similar technologies on the website and app. Cookies help keep the app secure, keep users signed in, remember useful preferences, and, where you consent, help us understand how the service is used.
You can change optional cookie choices at any time.
Types of cookies we use
| Category | Name or technology | Purpose | Duration | Essential? |
|---|---|---|---|---|
| App authentication and security | session |
Keeps authorised users signed in and stores essential session information for uploads, report generation, and security. | Usually until browser or session expiry unless configured otherwise. | Yes |
| App security | CSRF/session security values | Helps protect forms and requests against cross-site request forgery and unauthorised actions. | Session. | Yes |
| App browser storage | localStorage |
Stores app state such as background export job identifiers, dismissed prompts, report view preferences, and specification-mapping defaults. | Until cleared by the user, overwritten by the app, or no longer needed. | Usually yes or preference-based |
| App browser storage | sessionStorage |
Stores temporary report view, comparison, and print/export preferences for the current browser session. | Until the browser tab/session is closed or cleared. | Usually yes or preference-based |
| Cookie preferences | classdiagnostix_cookie_consent_v1 |
Stores your cookie choice so we do not ask you again on every page. | Until cleared or replaced by a newer consent version. | Yes |
| Website platform cookies | Platform security/session/performance cookies | May be used by the website platform for security, fraud prevention, safe page delivery, login, or performance. | Varies by provider. | Check exact provider list before publication. |
| Analytics | _ga, _ga_*, or equivalent |
Measures website usage and traffic patterns to help improve the service. | Usually up to 2 years depending on configuration. | No. Consent required. |
Managing cookies
Strictly necessary cookies are required for the website and app to work securely. Optional analytics cookies are only used if you accept them. You can also block or delete cookies through your browser settings, but blocking necessary cookies may stop login, uploads, report generation, or PDF export from working.
If Google Analytics is enabled, Google explains how it uses information from sites and apps using its services at Google's partner sites page.