Cookies & storage.
A clear list of every cookie and browser-storage key we use, why it's there, and how to switch off the optional ones.
Last updated · 2026-05-08
This Cookies Policy explains what cookies and similar storage technologies the Codex Analytica website uses, why we use them, and how you can control them. Read it alongside our Privacy Policy.
What are cookies?
Cookies are small text files that a website stores on your device. They let the site remember things about your visit (like your theme preference), measure how the site is used, and, for some sites, track you across the web for advertising. We don't do the last one.
We also use **localStorage** and **sessionStorage**, which are browser-native storage APIs that work the same way as cookies for our purposes.
Categories
Strictly necessary
RequiredThese are required for the site to function. They can't be turned off without breaking the experience. We don't use them for analytics or marketing.
| Name | Provider | Purpose | Lifetime |
|---|---|---|---|
| theme | First-party (localStorage) | Remembers whether you have selected light or dark mode. | Until you clear your browser storage. |
| consent | First-party (localStorage) | Records your cookie consent choices so we don't ask twice. | 12 months. |
Analytics
OptionalAnonymised, aggregated usage measurement. We don't sell or share this data, we don't combine it with personally identifiable data, and we don't use it for advertising.
| Name | Provider | Purpose | Lifetime |
|---|---|---|---|
| Vercel Analytics | Vercel Inc. (USA) | Privacy-respecting page-view counting. No cookies set on your device; uses anonymised request fingerprinting. | Not stored client-side. |
| PostHog | PostHog (EU region) | Product analytics: feature usage, funnels, retention. We deploy in EU region with cookie-less mode where possible. | Up to 12 months. |
Functional
OptionalEmbeds and integrations that enable specific features (calendar booking, video previews). Loaded only when you interact with that feature.
| Name | Provider | Purpose | Lifetime |
|---|---|---|---|
| Cal.com embed | Cal.com (EU region) | Renders the booking calendar when you open the booking section. | Session. |
Marketing
OptionalWe do not currently run remarketing or advertising pixels. If we add any, we will list them here and request your consent before activating.
None currently in use.
How to control cookies
- You can change or withdraw consent at any time using the **Cookie preferences** link in the site footer.
- You can also block or delete cookies in your browser settings. Note that disabling strictly necessary storage may break parts of the site (e.g., your theme will not persist).
- We honour the **Global Privacy Control (GPC)** signal: if your browser sends it, we treat it as a refusal of all non-essential cookies.