Analytics Checklist Before a Website Redesign

By the MyWebsiteScore team · Updated Oct 22, 2026

A website redesign can quietly break your analytics. New URLs, changed templates, and updated forms often mean lost tracking, broken goals, and gaps in your historical data. Before you flip the switch, run through this pre-flight checklist to make sure your measurement stays intact.

1. Document your current tracking setup

You can't preserve what you haven't mapped. Export or screenshot your existing configuration so you have a reference during and after the redesign.

• Tag manager containers: List all tags, triggers, and variables. Note which ones are essential (pageviews, events, conversions) and which are experimental.
• Analytics platform settings: Record property IDs, data streams, and any custom definitions (custom dimensions, metrics).
• Goals and conversions: In Google Analytics 4, these are key events. List each one, how it's triggered (destination, event, or duration), and where it's implemented (tag manager, hardcoded, plugin).
• Ecommerce tracking: If you sell products, note how transactions and items are sent (e.g., via data layer).
• Third-party pixels: List any advertising or heatmap tools and how they're installed.

2. Audit your URL structure and redirects

Analytics tools track pageviews by URL. If URLs change, historical data won't automatically map to the new pages.

• Create a redirect map: For every old URL that changes, set up a 301 redirect to the new equivalent. This preserves both user experience and link equity, and it helps analytics attribute traffic correctly.
• Check for parameter changes: If you use query parameters for tracking (e.g., UTM tags), make sure they remain consistent.
• Update internal links: After the redesign, internal links should point to the new URLs directly, not rely on redirects.

3. Verify tag implementation on staging

Don't wait until launch to discover a missing tag. Test on a staging or development environment that mirrors the new site.

• Use a tag debugging tool: Preview mode in your tag manager or a browser extension can show which tags fire on which pages.
• Test key user journeys: Submit a form, complete a purchase (in test mode), and click important buttons. Confirm the expected events and conversions fire.
• Check for duplicate tags: A common redesign mistake is leaving old tags in place while adding new ones, causing double counting.

4. Preserve historical data and annotations

Your analytics history is a baseline for measuring redesign impact. Protect it.

• Annotate the launch date: Add a note in your analytics platform so future you knows when the change happened.
• Export key reports: Save snapshots of traffic, conversion, and engagement reports from before the redesign. This gives you a comparison point.
• Avoid changing property settings: Don't alter data stream names or property settings right before launch; it can make historical comparisons confusing.

5. Set up a post-launch monitoring plan

Even with careful preparation, issues can slip through. Plan to monitor closely for the first few weeks.

• Daily checks: Look for sudden drops in traffic, conversions, or event counts. A sharp decline often signals a broken tag.
• Compare segments: Use date comparisons to spot anomalies. For example, compare the same day of the week before and after launch.
• Real-time reports: Use real-time views to confirm that visits and events are being recorded as expected.
• Feedback loop: Ask your team or customers to report anything that seems off.

6. Communicate with stakeholders

Make sure everyone who relies on analytics knows about the redesign timeline and any expected data fluctuations.

• Share the launch date: Inform marketing, sales, and leadership so they don't misinterpret a temporary dip.
• Explain the plan: Briefly outline how you'll validate tracking and what to do if something breaks.
• Assign ownership: Designate someone to monitor analytics immediately after launch and respond to alerts.

7. Keep a rollback plan

If tracking breaks badly, you may need to revert quickly. Have a backup of the old site and a way to restore it. Also keep your old tag configuration saved so you can redeploy if needed.

Final thought

A redesign is a big investment. Protect it by treating analytics as part of the launch, not an afterthought. Once you've worked through this checklist, you can launch with confidence that your data will keep telling the story.

For a quick health check of your site's current analytics and SEO setup, run a free audit with MyWebsiteScore. And for more guides on measurement and site improvements, visit our guides library.

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