Redesigning your website should make things better.

A better first impression. Clearer information. Easier navigation. Faster pages. Better enquiries. And, ideally, better visibility in search.

But a website redesign can also undo years of SEO work surprisingly quickly if the existing site isn’t handled carefully.

That doesn’t mean you should be frightened of redesigning an established website. Far from it. An outdated, slow or difficult-to-use website isn’t worth preserving simply because Google already knows where it is.

The important thing is understanding what has already earned value before you start changing it.

A good website redesign doesn’t simply replace the old website. It takes what is already working, protects it and builds something better around it.

Does redesigning a website affect SEO?

Yes, it can.

A redesign may change the content, URLs, navigation, internal links, page structure, performance and even the way search engines access the website.

Those are all things that can affect SEO.

But that doesn’t mean a redesign automatically damages your Google rankings.

Handled properly, a redesign can actually provide an excellent opportunity to improve SEO. You can strengthen weak content, simplify confusing navigation, improve page speed, remove technical problems and create a much clearer website structure.

The problems tend to occur when an existing website is treated as though nothing on it matters.

It does.

Even a website that looks thoroughly past its best may contain pages that have accumulated backlinks, rankings, authority and search traffic over many years.

Throw those away and the shiny new website can find itself starting several steps down the ladder form the supposedly inferior one it replaced.

Before redesigning a website, find out what’s already working

One of the first things I check before replacing an established website is what Google already likes about it.

Which pages receive organic traffic?

Which pages rank for useful searches?

Which pages have external websites linking to them?

Which content attracts visitors?

Which URLs have been indexed for years?

And, just as importantly, which parts of the website aren’t doing anything useful at all?

Google Search Console is particularly useful here because it can show which pages are receiving impressions and clicks from Google Search before anything is changed.

A redesign is an opportunity to improve the weaker parts without accidentally destroying the stronger ones.

This is why simply looking at an old website and deciding what to keep based upon appearance can be dangerous.

A dull-looking page buried three levels into an ageing website might not appear particularly important. But if it ranks well in Google and regularly introduces potential customers to the business, deleting it because it doesn’t fit neatly into the new design would be rather foolish.

SEO value isn’t always visible on the screen.

Changing URLs is one of the biggest risks

Imagine your existing website has a page at:

yourwebsite.co.uk/services/commercial-printing/

That page has existed for eight years. Google knows it. Other websites link to it. It appears in search results and attracts useful visitors.

During the redesign, somebody decides the new URL should be:

yourwebsite.co.uk/what-we-do/print/

There’s nothing inherently wrong with the new address.

The problem occurs if the old one simply disappears.

Visitors following old links receive a 404 error and search engines discover that a page they previously knew no longer exists.

The new page may contain similar information, but Google doesn’t automatically know that it is intended to replace the old one.

That’s where 301 redirects become important.

A 301 redirect permanently sends the old URL to the most appropriate new URL. It helps visitors reach the correct page and gives search engines a clear indication that the content has moved. Google specifically recommends using permanent server-side redirects such as 301 or 308 redirects when a URL has permanently changed in its guidance on redirects and Google Search.

On a substantial website redesign, I would normally map old URLs against their new destinations rather than waiting for broken links to appear after launch.

It’s one of those jobs nobody will admire when they see the finished website.

That’s rather the point.

Don’t redirect everything to the homepage

A common shortcut during a redesign is to redirect every removed page to the homepage.

Problem solved?

Not really.

If somebody follows a link expecting information about commercial printing, dumping them onto a generic homepage isn’t particularly useful. Nor does it give search engines a meaningful replacement for the original page.

Where an old page has a clear equivalent, redirect it to that page.

If several old pages are being consolidated into one stronger page, they may reasonably redirect there.

And if content genuinely has no replacement, sometimes allowing the old URL to disappear is more appropriate than pretending the homepage is the answer to everything.

Redirects should make sense to humans as well as search engines.

Be very careful when removing content

Redesigns have a habit of making websites shorter.

Sometimes that’s exactly what’s needed. Years of duplicated services, abandoned news posts, obsolete staff pages and general clutter can make a website difficult to navigate and maintain.

But less content isn’t automatically better content.

If five existing pages are reduced to one paragraph because the new design looks cleaner that way, you may also have removed much of the information that helped Google understand what the business does.

More importantly, you may have removed the information potential customers were actually looking for.

Good website content shouldn’t exist simply to make a page longer. It should answer questions, explain services, establish expertise and help somebody decide whether the business is right for them.

That principle applies throughout a good business website: design and content need to work together rather than one being sacrificed to accommodate the other.

A redesign should therefore ask:

Does this content still have a purpose?

Not simply:

Will it fit into the new layout?

Keep the purpose of important pages clear

You can keep exactly the same URL and still damage a page’s search performance by completely changing what that page is about.

Suppose a page ranks well for a particular service. During the redesign it’s transformed into a broad overview containing a few sentences about six different services.

The URL hasn’t changed.

But its relevance has.

If a page is already performing well for a useful search term, that should influence how the new version is planned.

That doesn’t mean preserving every word indefinitely. Content can and should be improved.

But improvement should strengthen the page’s purpose rather than accidentally removing it.

Internal links matter too

Links between pages help people navigate a website, but they also help search engines understand how its content relates.

A redesign often changes the navigation and page hierarchy considerably.

That can be a good thing.

An old website may have important information buried several clicks deep, while less useful pages occupy prime positions in the main menu.

The redesign gives you an opportunity to correct that.

Important service and subject pages should be easy to reach, and related content should link together naturally.

For example, an article explaining a particular problem can link to the relevant service that solves it. Related articles can support one another rather than existing as isolated islands of information.

Google itself recommends using crawlable links and descriptive anchor text to help both people and Google understand the relationship between pages in its SEO guidance on links.

Good internal linking creates a more useful website for visitors while giving search engines clearer signals about which pages matter and how the site fits together.

Don’t forget the basic on-page SEO

When content is moved into a completely new website, some surprisingly basic things can get lost along the way.

Page titles may be replaced with generic ones.

H1 headings can disappear or multiply unnecessarily.

Meta descriptions get forgotten.

Image alt text vanishes.

Canonical URLs change.

Structured data is removed.

None of these individually means instant SEO catastrophe, but collectively they can turn a carefully established website into something much less clearly defined.

If an existing page performs well, I want to know how that page is currently presented to search engines before replacing it.

Then we can decide what should remain, what can be improved and what genuinely needs changing.

This is one reason I treat SEO structure as part of WordPress website design & development rather than something to bolt onto a website after it has been built.

Make sure Google can actually access the new website

Development versions of websites are commonly hidden from search engines while they’re being built.

That’s sensible.

You don’t want Google indexing an unfinished staging website containing placeholder text, duplicated pages and half the navigation missing.

The problem comes when those restrictions make their way onto the live website.

A forgotten noindex setting or an incorrectly configured robots.txt file can prevent search engines from accessing pages you actually want them to find.

It’s a tiny setting capable of causing a disproportionately large headache.

Google provides an URL Inspection tool within Search Console that can be used to check how Google sees individual pages and whether they are eligible for indexing.

After launch, crawlability and indexing should always be checked rather than simply assuming everything is fine because the website appears normally in a browser.

Website speed can improve or damage SEO

A redesign often adds more.

Larger images. Animation. Video. New fonts. Tracking scripts. Plugins. Page-building features and various decorative flourishes that seemed like a splendid idea during the design meeting.

Individually they may be harmless.

Collectively they can make the new website considerably slower than the old one.

Google uses Core Web Vitals as part of its assessment of page experience, but website performance isn’t just an SEO consideration.

A slow website is frustrating for the people you’re trying to attract.

Your customers don’t care about your PageSpeed score. They care whether your website feels fast – and that it’s worth reading when they get there.

A redesign should therefore be an opportunity to improve performance, not simply give a slower website nicer clothes.

Mobile shouldn’t be an afterthought

For many businesses, a large proportion of visitors will encounter the website on a phone.

So the desktop design looking magnificent isn’t enough.

Content needs to remain accessible on smaller screens. Navigation needs to work properly. Buttons need to be usable. Text needs to be readable and important information shouldn’t disappear simply because somebody decided it made the mobile version look tidier.

Google now crawls websites using the smartphone version of Googlebot, making the mobile version particularly important to how a site is understood and indexed. Its mobile-first indexing guidance recommends keeping the important content and metadata consistent across mobile and desktop versions.

Responsive website design isn’t about squeezing the desktop site onto a smaller screen.

It’s about making the same website work properly wherever somebody chooses to use it.

What should be checked before the new website goes live?

Before replacing an established website, I would want a clear picture of the old one.

That includes its existing URLs, important landing pages, organic traffic, useful rankings, backlinks and current website structure.

From there, the new website can be compared against it.

Have important pages been retained?

Have changed URLs been mapped?

Are redirects ready?

Has useful content survived the move?

Do internal links still make sense?

Are title tags and headings appropriate?

Can search engines crawl the site?

Is the XML sitemap correct?

Are canonical URLs pointing where they should?

Are there unexpected 404 errors?

Is the website performing properly on mobile and desktop?

It isn’t glamorous work, but neither is checking the foundations before building an extension.

You tend to appreciate it most when somebody hasn’t done it.

What happens after the redesigned website launches?

Launching the new website isn’t the end of the process.

It’s the point at which you find out whether all the planning worked.

Google Search Console can help identify indexing problems and changes in search performance after launch.

The website’s XML sitemap should also be checked and submitted through Search Console where appropriate. Google explains the process in its guidance on building and submitting a sitemap.

Analytics can show whether important landing pages continue receiving visitors and whether those visitors are behaving differently on the new website.

The site should also be checked for broken links and unexpected 404 errors.

Some movement in search rankings after a significant redesign or migration isn’t necessarily a reason to panic. Search engines need to crawl and reassess the changed website.

What matters is being able to spot genuine problems quickly rather than discovering three months later that an important section of the website quietly disappeared from Google.

And once the initial dust has settled, the website still needs looking after. Ongoing website maintenance & support helps keep the site secure, current and performing as intended rather than allowing technical problems to accumulate again.

Can a website redesign actually improve your rankings?

Absolutely.

Protecting existing SEO doesn’t mean wrapping the old website in cotton wool.

A redesign gives you the opportunity to fix things that may have been limiting its performance for years.

Poor website structure can be simplified.

Thin pages can be expanded or combined.

Duplicate content can be removed.

Important services can be given proper pages.

Internal linking can be improved.

Old technical problems can be corrected.

Pages can load faster.

Mobile usability can improve.

And the website can provide considerably better answers to the questions potential customers are searching for.

That’s why I don’t see SEO and website design as two unrelated jobs.

A beautiful website that nobody finds isn’t doing its job particularly well.

Neither is a website that ranks highly but gives visitors no confidence in the business behind it.

The aim is to improve both.

A redesign should build on what you’ve already achieved

An established website has history.

Some of that history may be worth removing. Old content, poor design decisions and years of accumulated clutter don’t deserve preservation simply because they’ve been there for a long time.

But an existing website may also have spent years building search visibility, attracting links and establishing useful pages.

A good redesign recognises the difference.

It shouldn’t blindly preserve everything.

And it certainly shouldn’t blindly throw everything away.

The objective is to understand what already works, protect the value you’ve built and use the redesign as an opportunity to make the website stronger.

Done properly, a new website shouldn’t mean starting again with Google.

It should mean starting from a better position.