CRO Sidekick for Webflow Optimize

About

CRO Sidekick is a power tool for Webflow Optimize users who need deeper experiment analysis than the built-in dashboard provides.

  What it does:
  - Extracts live experiment data directly from Webflow Optimize pages
  - Runs independent two-proportion Z-tests with p-values, z-scores, statistical power, and probability to beat control
  - Compares conversion rates across all goals in a single view
  - Breaks down performance by 20+ audience dimensions (device, traffic source, country, browser, UTM parameters, and more)
  - Generates interim and final reports with one click
  - Exports data as CSV, JSON, or Markdown

  Key features:
  - 3-tab dashboard: Dashboard, Analysis, and Settings
  - Configurable confidence level (90%, 95%, 99%) and hypothesis type (one-sided / two-sided)
  - Copyable interim summary with auto-generated statistical analysis
  - Mini comparison charts for quick visual assessment
  - Rule-based insights engine that flags winners, losers, low power, sample size gaps, novelty effects, and segment opportunities
  - Real-time event logger for debugging data extraction

  How it works:
  This extension reads experiment data from the Webflow Optimize page you're viewing. It does not collect, store, or transmit any data to external servers. All computations happen locally in your browser.

  Permissions:
  - activeTab & tabs: To detect when you're on a Webflow Optimize experiment page
  - scripting: To extract experiment data from the page
  - storage: To save your settings (confidence level, hypothesis type)
  - clipboardWrite: To enable copy-to-clipboard for reports and data
  - sidePanel: To display the CRO dashboard in Chrome's side panel
  - Host permission (optimize.webflow.com): To replay API calls for multi-goal and dimension breakdowns

  No data leaves your browser. No account required. No AI or external services used.