Retargeting pixel
A script or tracking image from an advertising platform, fired as a visitor passes through a link so they join an audience.
Updated August 14, 2026
A retargeting pixel is a small piece of advertising-platform code — historically a one-by-one image, today usually a script — that runs in the visitor's browser and adds them to an audience you can advertise to later. Attaching one to a short link means you can build audiences from traffic you send to pages you do not own, such as a press article or a partner's shop.
Mechanically this changes the journey. A plain redirect answers with a destination and nothing runs; a link carrying pixels has to load a brief intermediate page so the platform's code can execute. That extra step costs a fraction of a second and a little drop-off, which is why it belongs on placements where the audience is worth it rather than on every link by default.
Two constraints follow. What you configure is the address of the platform's script, not markup you paste in — the surrounding code is generated, so no workspace can inject anything into pages served on another's domain. And because a pixel is tracking, it sits squarely inside your consent obligations.