---
title: "What is Control Page?"
url: https://fibr.ai/glossary/control-page
description: "A control page is the original version of a webpage used to compare variants in experiments, helping you measure performance changes and improvements."
last_updated: 2026-05-05T11:56:08.978779+00:00
---
Control Page is the original version of a page used as a comparison point in an experiment. Other versions (variants) are measured against it to determine performance differences.

Using a control page gives a clear baseline for judging changes. You can understand whether a new design, copy change, or layout update created improvement or had no meaningful effect.

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