Cookie Policy
Last updated: 29 April 2026
This Cookie Policy explains what cookies and similar technologies we use on charlesmackaybooks.com, why we use them, and how you can control them. It supplements our Privacy Policy.
1. What are cookies?
Cookies are small text files placed on your device by a website. They are widely used to make websites work, or work more efficiently, and to provide information to the site owner. Similar technologies include local storage and session storage.
2. The cookies we use
Strictly necessary (always on)
These are required for the site to function. They are exempt from consent under regulation 6(4) of the Privacy and Electronic Communications Regulations 2003 (PECR).
| Name | Provider | Purpose | Lifetime |
|---|---|---|---|
| sb-* (e.g. sb-access-token, sb-refresh-token) | Supabase | Authentication session for logged-in customers. | Session / up to 1 year |
| cookie_consent | This site (localStorage) | Stores your cookie preferences so we do not ask again. | Until cleared |
| cart / basket | This site (localStorage) | Remembers items in your basket between page loads. | Until cleared or order placed |
| __stripe_mid, __stripe_sid | Stripe | Fraud prevention on the Stripe-hosted checkout. | Up to 1 year |
Analytics (consent required)
Set only if you accept analytics cookies. Used to understand aggregate visitor behaviour and improve the site.
| Name | Provider | Purpose | Lifetime |
|---|---|---|---|
| _ga | Google Analytics 4 | Distinguishes unique users. | 2 years |
| _ga_RJS2CCBSJP | Google Analytics 4 | Persists session state for our GA4 property. | 2 years |
Marketing / advertising (consent required)
Off by default. May be set in future if/when we run paid advertising campaigns.
| Name | Provider | Purpose | Lifetime |
|---|---|---|---|
| _gcl_au | Google Ads | Conversion linker for Google Ads campaigns. | 3 months |
3. Managing your cookie preferences
You set your initial preferences using the banner shown on first visit. You can change them at any time:
- : re-opens our banner so you can update your choices.
- You can also clear cookies and site data through your browser settings (Chrome, Firefox, Safari, Edge all provide controls under Settings » Privacy).
- Google offers a Google Analytics opt-out browser add-on at tools.google.com/dlpage/gaoptout.
4. Changes
If we add or change cookies we will update this page and, where required, ask for fresh consent through the banner.