How To Protect SEO Performance During a Website Redesign

Summary

Website redesigns are one of the biggest risks to organic performance. When a site already drives significant revenue, traffic, or leads, even small structural or content changes can disrupt rankings and reduce visibility.

Protecting performance requires clear benchmarking, careful planning, and early involvement from marketing and SEO teams.

A redesign should enhance performance, not reset it, and the safest approach is to treat SEO foundations with the same importance as design and UX decisions.

A website redesign is often a positive investment, but it comes with real risk if SEO is not prioritised from the start.

Any site generating substantial revenue relies on established equity: indexed pages, backlinks, structured content, and URLs that Google already understands. When those elements change, organic performance can shift rapidly.

Marketing managers need a clear framework to protect this equity. Here are the steps that keep redesigns stable and allow you to launch with confidence rather than gambling with years of performance.

Benchmark Your Entire Organic Performance Before Anything Else

A redesign cannot be planned safely unless you know exactly how your current site performs.

Before a single page is redesigned, benchmark rankings, organic sessions, conversions, assisted revenue, and top-performing URLs. This creates a reference point for both risk management and post-launch validation.

Having a detailed benchmark is essential for the work we carry out in our wider SEO agency services, especially when protecting or improving commercial outcomes during technical changes.

Keep URLs Identical Wherever Possible

Your existing URLs already carry years of data that Google uses to index and rank your pages.

Changing them unnecessarily can break those signals and create a period of instability. URL changes should only happen when they deliver clear structural improvements.

If a URL does need to change, the redirect strategy must be planned well before launch. Mapping URLs in advance is significantly safer than trying to fix issues once the site has already gone live.

Retain Metadata, H1s, and Internal Links That Already Work

Many redesigns unintentionally remove or rewrite high-performing metadata, heading structures, and internal linking patterns. These elements often play a direct role in visibility and ranking stability.

Carry over page-level assets that contribute to performance, and only adjust them if based on clear SEO reasoning.

Internal linking, in particular, should not be rebuilt from scratch without reviewing how your current structure supports traffic flow and topical relevance.

For businesses operating across several locations or sectors, this is especially important when working on service and industry pages such as our campaigns for manufacturing or location-based clients.

Do Not Delete or Merge Pages Without Reviewing Their Value

It is easy to overlook the value of certain pages during a redesign, especially older blog posts, legacy service pages, or “thin” informational content. However, pages that seem unimportant may be driving backlinks, long-tail rankings, or assisted conversions that contribute directly to revenue.

Every page should be reviewed with data, not assumptions. Removing a page with strong authority or external links can weaken your entire site structure.

Test Crawlability, Rendering, and Status Codes Before Launch

Technical issues introduced during development can block Google from crawling or understanding the new site.

Testing should happen on staging weeks before launch, not in the final hours.

Check:

  1. Crawlability
  2. Rendering (especially JavaScript-heavy content)
  3. Internal linking
  4. Canonical logic
  5. Indexation settings
  6. Status codes
  7. Redirect behaviour

Early testing prevents emergency post-launch fixes and ensures that the site is structurally sound before going live. This aligns closely with the work we cover in our technical SEO service.

Keep Tracking, Analytics, and Tagging Fully Consistent

Data continuity is essential during a redesign.

Analytics should remain consistent so the pre-launch and post-launch periods can be compared cleanly.

This includes checking conversion tracking, event triggers, engagement metrics, and attribution rules.

A redesign is also a useful time to improve KPI frameworks, refine dashboards, or introduce new measurements. However, this should enhance tracking rather than disrupt continuity.

Most Redesigns Go Wrong When Marketing Is Not Involved Early

The biggest risk to SEO performance is leaving marketing and SEO teams out of the process until the final design phase.

When design leads and marketing retrofits SEO afterwards, the result is usually:

  • Redirects completed in a rush
  • Lost content
  • Weak URL planning
  • Inconsistent metadata
  • Poor internal linking
  • Crawl barriers
  • Content mismatches

This is how years of SEO performance can disappear overnight.

Redesigns perform best when developers, designers, and SEO specialists collaborate from the start, not after layouts and templates are already committed.

Protecting Performance Requires a Structured, Proactive Approach

A successful redesign does not rely on reacting to issues after launch. It requires accurate benchmarking, proper planning, technical testing, and early involvement from SEO.

These steps safeguard your visibility, protect revenue, and ensure your new site launches stronger than your old one.

Picture of Sam King
Sam King
Sam is a front-end web developer working with our SEO team to implement actions from our strategy workflows, build high performing websites and maintain the technical foundation of our clients websites.

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