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Image Trackers ​

Some third-party images set cookies as soon as they load — tracking pixels, social badges, and embed previews. A browser requests an image the moment it parses a live src, so those cookies land before the visitor makes a consent choice, and Consent Pro cannot intercept the request.

A cookie-setting image therefore needs one manual change to the markup. After that, Consent Pro loads it once the visitor accepts the required categories.

Find them ​

Scan the site, then open the Manager and look for trackers carrying a from Image badge. Opening the tracker shows the image it was attributed to.

For how detection works — including httpOnly cookies read from response headers — see Image Trackers in the JavaScript API docs.

Block one ​

The image has to render with no src attribute at all, so the markup must be yours to control. Use an Embed element (or page custom code) for the image, rather than a native Image element.

  1. Place the image markup in an Embed element.
  2. Leave out the src attribute.
  3. Put the URL in fs-consent-src and add fs-consent-categories.
  4. Publish the site.
html
<img fs-consent-src="https://example.com/tracking-pixel.svg" fs-consent-categories="marketing" alt="" />

Consent Pro sets src when the visitor accepts the category, and removes it again if consent is revoked.

Essential images need no change

Essential cookies don't require consent, so an image that only sets an essential cookie can keep its normal src. Label the tracker as Essential in the Manager so it is still disclosed.

For the category values and multi-category behaviour, see the category reference.