Redirect Testing

What Is Redirect Testing?

Redirect testing is an A/B testing approach where incoming traffic to a URL is split and some users are redirected to a different URL serving a variant page. Instead of modifying elements on a single page via JavaScript, the variant is an entirely separate page with its own code path, assets, and template. It's the right tool for testing structural changes that can't be achieved via inline DOM manipulation.

Also Known As

• Marketing teams call it redirect test, URL split, or landing page swap.
• Growth teams say redirect test or URL-level A/B.
• Product teams use page-level test or URL-level experiment.
• Engineering teams refer to it as redirect-based testing or 302-based split.
• SEO teams refer to it cautiously — they worry about canonical handling and duplicate content.

How It Works

Original URL: /pricing. Variant URL: /pricing-v2. Your testing platform (or server/CDN logic) routes 50% of /pricing requests to /pricing-v2 via a server-side 302. Both URLs have a canonical pointing to /pricing to consolidate SEO signals. Users in the test cohort see /pricing-v2 for the test duration (sticky via cookie). Tracking fires on both pages to attribute conversions to the variant. After 14 days you've seen 20,000 visitors to each — control converts at 3.5%, variant at 4.2%.

Best Practices

• Use server-side or CDN redirects (302), not client-side JS redirects.
• Set canonical tags on both URLs pointing to the original to protect SEO.
• Match tracking parameters and UTM handling identically across both pages.
• Monitor redirect latency — anything over 100ms biases variant conversion downward.
• Clean up the losing URL after the test to prevent indexing and maintenance debt.

Common Mistakes

• Using JavaScript redirects that add 300–500ms of latency, artificially depressing variant performance.
• Forgetting to set canonicals, letting search engines index both URLs and splitting link equity.
• Running redirect tests on high-intent URLs where even minor latency kills conversion.

Industry Context

• SaaS/B2B: Common for testing pricing page architectures or demo flow redesigns.
• Ecommerce/DTC: Useful for category page or landing page template tests.
• Lead gen: The classic method for comparing entire landing page templates.

The Behavioral Science Connection

Redirect testing lets you compare fundamentally different information architectures — progressive disclosure vs. single-page overview, step-wise vs. comprehensive. These are questions about cognitive load and completion bias that element-level tests can't answer, because the differences live in the page structure itself, not any single component.

Key Takeaway

Use redirect testing for structural page-level changes — with server-side redirects and canonical handling to protect data quality and SEO.