Does the preview_theme cookie need consent?

Usually yes. preview_theme is a functional cookie, and unless it is strictly necessary for a feature the visitor asked for, it needs consent before it is set.

How long does the preview_theme cookie last?

preview_theme usually lasts until the browser closes. The exact lifetime depends on the site's settings and the version of the script that sets it.

Who sets the preview_theme cookie?

preview_theme is set by Shopify. It is in the Functional category.

How do I block or delete the preview_theme cookie?

Visitors can delete preview_theme in their browser's cookie settings. On your own website, a consent banner can keep the script that sets it waiting until the visitor accepts functional cookies. Kukie.io's banner does this for known trackers by default, and for any other script you tag with its category.

Functional

preview_theme cookie

Set by Shopify.

What it does

Used in connection with the theme editor

Cookie name: preview_theme
Category: Functional
Provider: Shopify
Duration: Session
Data source: Open Cookie Database (opens in a new tab)

Consent

Usually needed

preview_theme is in the Functional category. Functional cookies usually need the visitor's consent, unless the cookie is strictly necessary for something the visitor asked for, such as remembering a language they just chose.

GDPR and ePrivacy (EU): Consent is needed before setting preview_theme, unless it is strictly necessary for a feature the visitor asked for, such as remembering a language they just chose.
UK GDPR and PECR: The same as in the EU: consent first, unless the cookie qualifies for the strictly necessary exemption.
CCPA and CPRA (California): Disclose preview_theme in your privacy policy. If the data it stores is shared with third parties, honour opt-out requests, including the Global Privacy Control signal.

Managing preview_theme with a consent banner

A consent banner can keep the script that sets preview_theme waiting until the visitor accepts functional cookies. Kukie.io's cookie scanner finds preview_theme and sorts it into a category. The banner holds back known trackers by default, and any other script you tag with its category waits too.

Learn more about script blocking

Related cookies