Legal

Cookie policy

Cookies are small files a site stores in your browser. We use a few, and analytics and advertising cookies stay off until you opt in. See our privacy policy for the wider picture.

Updated September 21, 2026

Your choice comes first

When you first visit, we ask what you allow. Only strictly necessary cookies are set before you choose. Nothing for analytics or advertising is loaded until you opt in, and you can change your mind at any time.

Cookies we use

NameCategoryPurposeProviderExpiry
zds_consent Necessary Remembers your cookie preferences so we do not ask again. This site 6 months
zds-theme Necessary Remembers light or dark theme. Stored in your browser (local storage), not sent to us. This site Until cleared
_ga, _ga_* Analytics Distinguishes visitors and measures site usage. Set only after you opt in. Google Analytics Up to 2 years
_gid Analytics Distinguishes visitors over a short window. Set only after you opt in. Google Analytics 24 hours
_fbp Advertising Identifies a browser so we can measure our Meta ad campaigns and show ads to people who already visited the site. The Meta Pixel is not loaded at all until you opt in. Meta 3 months
_fbc Advertising Records the Meta ad click that brought you here, so a later enquiry can be attributed to the right campaign. Only set if you arrive from a Meta ad and have opted in. Meta 3 months
Other Google Ads / Meta cookies Advertising Measures and improves ad campaigns. Set only after you opt in, and only while those tools are active. Google, Meta Varies

Managing or withdrawing consent

Use the control above (also available from the footer) to review or change your choices. You can also clear cookies in your browser settings, in which case we will ask again on your next visit.

Turning advertising off stops the Meta Pixel from sending anything further and deletes the _fbp and _fbc cookies it had set.

Changes to this policy

We may update this policy as the site or our tools change. The date at the top reflects the latest version.