Session replay

A reconstruction of what a user saw and did on a site: clicks, scrolls, page changes and errors, played back like a video.

The script records changes to the page, not a video, and rebuilds them for playback. Funnels tell you where people drop off; replays show why: a button below the fold, an error message nobody reads, a form that rejects a valid phone number. Recordings can capture personal data, so inputs should be masked and consent handled.

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Related terms

Conversion funnel: The ordered steps users take towards a goal, such as visit, sign-up and payment, with the share who get from each step to the next.
Tracking plan: The short list of events a product sends, with names, properties and where each is captured.
First-party analytics proxy: Sending analytics through a path on your own domain, so ad blockers that block known analytics hosts do not drop the data.

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