Website redesign:
a modern site that keeps its rankings
A redesign is not judged on launch day. It is judged three months later, when you check whether the rankings came back. We rebuild existing websites by treating design, engineering and search together, because those are the three things that break together when they are handled separately.
Audit of what exists, complete URL mapping, redirects checked one by one, content migration, then ranking monitoring in the weeks that follow. You do not start from scratch: you keep what works and fix the rest.
What a website
redesign covers
Six workstreams that move together, because they break together.
Audit of what exists
We start by measuring what the current site is worth: pages that bring traffic, queries it shows up for, content nobody reads, technical debt. Without that baseline, a redesign moves blind and nobody can tell what was lost.
URL mapping and redirects
Every URL on the old site is listed, then matched to its destination on the new one. One by one, including the ones nobody uses any more but Google still knows about. It is the least glamorous part of a redesign and it is the one that decides the outcome.
Design and user journeys
New interface, new information hierarchy, new paths through the site. We start from what visitors actually do on the current site rather than what we would like them to do.
Content migration
Text, images, articles, product pages, structured data. Content that performs is kept and improved, content that serves nothing is removed cleanly, with the redirect that goes with it.
Engineering and performance
Platform choice, load time, Core Web Vitals, semantic markup, accessibility. A redesign is the only moment when the foundations can change without breaking everything, so it is worth using.
Post launch monitoring
The weeks after a redesign are where everything is decided. We watch indexing, crawl errors, rankings and traffic, and fix as we go.
Redesigns rarely fail on design
On redesigns that go wrong, the design is almost never the cause. The new site looks better than the old one, everyone is happy on delivery day, and three weeks later organic traffic has halved without anyone understanding why.
What happened is almost always the same thing. The addresses changed, the old ones were not redirected, and Google ends up with several hundred pages returning an error. Those pages had history, inbound links, rankings. None of that moves to the new site: it disappears.
We documented one of these cases on a site we monitor. A migration from an old URL scheme to a new one, without a complete redirect table. Measured in Search Console: 303 old addresses returning a 404, carrying 52,700 of the site's 100,000 impressions over six months. Half the visibility, erased by an incomplete redirect file. The new site itself was very well built.
That is why URL mapping comes before design in our method. It is not the part you show in a meeting, it is the part that decides whether the redesign is an investment or a write off.
The other classic mistake is quieter. A site rebuilt on a modern stack, with no particular tuning, can end up spending most of the time Google allocates to it on technical files rather than on its pages. We covered one of these cases in detail in our Knowledge section: 8 % of the crawl budget spent on HTML, the rest going into JavaScript reloaded over and over because of a hosting setting that was on by default. The site was live, fast and well built. Google saw almost none of it.
A fixed-fee redesign ends the day it ships.
Ours doesn't.
Redesign or rebuild: how to decide
The question comes up on every project and the answer rests on one thing: does the existing site hold value worth keeping.
A site that receives organic traffic, has inbound links and a URL history Google knows deserves a redesign. You keep the capital and change the rest. Starting over on a new domain or a new structure without carrying that history over means throwing away years of accumulated value to save a few weeks of method.
A site with no traffic, no inbound links and no reusable content does not deserve the trouble of preserving its past. In that case a full build often costs less than a redesign, because no time goes into protecting something that does not exist. It is a conversation we would rather have honestly at the start, even if it means pointing you to our website creation page instead of this one.
Between the two sits the progressive redesign. The site is not replaced in one go: templates are rebuilt one after another, addresses are kept, and the effect of each step is measured. It takes longer to describe and it is far less risky to live through. It is the default mode with the Infinity subscription, because there is no reason to freeze everything for three months when you can move continuously.
Six signs a redesign
is overdue
One of these is not enough. Three is.
The site cannot be edited without a developer
Every text change goes through a supplier, so nothing ever changes. A site you cannot edit yourself goes stale twice as fast.
Mobile performance is blocking conversion
More than half of visits come from a phone. A site that is slow on mobile loses its visitors before it has said anything.
Organic traffic has been falling for months
Steady erosion over six to twelve months, with no change in the business, usually points to an outdated technical base or content the competition has caught up with.
The technology is no longer maintained
An abandoned CMS, a plugin that stopped receiving updates, a PHP version at end of life. That is no longer a comfort issue, it is a security issue.
The site no longer says what you do
The offer moved on, the site stayed. It is the most commercially expensive gap and the easiest one to ignore.
Every change costs a quote
When the smallest edit requires an estimate, a back and forth and an approval, the site stops evolving. That is not a budget problem, it is a friction problem.
What a redesign fixes,
and what it does not
What a redesign fixes
Engineering
- Load time and Core Web Vitals
- End of life platform
- Known security holes
- Semantic markup and structured data
- Accessibility
Search
- URL architecture
- Duplicate and competing pages
- Broken internal linking
- Redirect chains piled up over the years
- Sitemap and crawlability
Conversion
- Confusing journeys
- Forms that ask for too much
- Missing or buried calls to action
- Mobile rendering
- Information hierarchy
What a redesign does not fix
Positioning
- A vague offer stays vague after a redesign
- A price that is never shown stays hidden
- A promise nobody searches for will not find an audience
Content
- A site with no content does not fill itself
- Text that is never updated goes stale just as fast on a beautiful site
- A redesign does not create demand where there is none
Acquisition
- A site with no inbound links does not earn them by magic
- A redesign does not replace a content strategy
- Paid traffic does not turn organic by changing the design
We would rather say it up front: if the problem is positioning or missing content, a redesign will make it prettier without solving it.
Our redesign method,
step by step
Six steps, two of which most agencies bill as extras.
Audit and baseline
Full record of what exists: rankings, pages with traffic, inbound links, technical errors, content. That baseline is what lets you judge the redesign three months later, and it is the only way to know whether it worked.
URL mapping
Every address on the old site is listed and matched to its destination. Removed pages get a redirect to the closest equivalent, never to the home page by default. Technical addresses that no longer have a reason to exist get a permanent removal code rather than an error.
Structure and design
Architecture, journeys, mockups. We work from the current site's own usage data: what gets read, what never does, where visitors drop off.
Build and migration
Integration, development, content transfer. The new site is built on a separate environment, with visible deliveries along the way rather than a final reveal.
Switch and verification
Go live, redirects activated, checked one by one, new sitemap submitted, reindexing requested. It is the most technical day of the project and it is prepared in advance.
Monitoring and fixes
Indexing, crawl errors and rankings are tracked in the weeks that follow. A redesign always produces surprises: what matters is seeing them early.
Website redesign with
Synerium Agency
As a website redesign agency, Synerium offers two ways to run the project, depending on whether you prefer a defined scope or continuous evolution. In both cases the audit, the redirects and the post launch monitoring are part of the service. They are not options.
Infinity subscription
Progressive redesign, template by template, through a monthly subscription with no cap on requests. The site never stops, changes are measured as they ship, and the project does not end at launch. It is the safest mode for a site that already has traffic worth protecting.
Learn moreStudio package
Full redesign with a scope defined up front and follow up credits included after delivery. Suited to a one off project with a release date, a rebrand or a platform migration.
Learn moreWhy trust your redesign to Synerium
Redesigning a site means moving something that already partly works. The difficulty is not doing better, it is not breaking what already worked.
Search is handled before design, not after
URL mapping and the redirect plan are produced at the start of the project, not the day before launch. That is the opposite of the usual order, and it is what explains the difference in results three months later.
You watch the site take shape, not a final reveal
The new site is built on a staging environment you can open at any time. You follow, comment and adjust during the build rather than discovering it and asking for fixes afterwards.
The project does not stop at the switch
The weeks after a redesign are when problems show up. With Infinity, fixes and optimisations continue without a new estimate. With Studio, follow up credits are included for the same reason.
Does a redesign lose your search rankings?
It loses them when old addresses are not redirected to the new ones. That is the cause of most of the drops seen after a redesign, and it is avoidable with complete URL mapping done at the start of the project. When redirects are in place, a redesign usually improves rankings, because it fixes structure, speed and markup along the way.
How long does a website redesign take?
A brochure site is redesigned in three to six weeks, an e-commerce site in two to three months depending on the catalogue and integrations. With Infinity the redesign is progressive: the first deliveries land within 48 to 72 hours and the site evolves template by template without going offline.
How much does a website redesign cost?
At Synerium there is no redesign quote. Studio finances the project in fixed monthly payments from 499 € per month, all inclusive. Infinity covers the redesign and everything that follows in an unlimited subscription with no per task billing. Either way, you know what you pay before you start.
Does all the content have to be rewritten?
No, and it is rarely a good idea. Content that receives traffic is kept and improved, content that does not is removed or merged. Rewriting an entire site is an efficient way to lose the rankings you had.
Can we keep the same domain name?
Yes, and that is the usual case. The domain carries the age and the inbound links: there is no reason to change it unless the brand changes. If a domain change is necessary, it is handled with a complete redirect plan and a period of close monitoring.
What happens to external links pointing at the old site?
They keep working if the redirects are in place. A permanent redirect passes most of the link's value to the new address. That is exactly what is lost when the mapping is incomplete.
Can a site be redesigned without going offline?
Yes. The new site is built on a separate environment and the switch happens in a single operation. The site stays available throughout the project. In a progressive redesign with Infinity there is no switch at all: templates are replaced as they are finished.
Redesign or full rebuild: how do we know?
If the current site receives organic traffic and has inbound links, it is a redesign: there is capital to protect. If it has neither, a full build often costs less, because no time goes into preserving something without value. We will say so plainly during scoping.
Do you work with every technology?
We redesign WordPress, WooCommerce, PrestaShop, Shopify, Webflow and Wix sites as well as custom builds, moving to WordPress, Shopify or a Next.js base depending on the need. The target depends on who will run the site day to day and how specific the business logic is, not on our preferences.
How long before the old rankings come back?
With complete redirects, rankings usually return within two to six weeks, with a period of instability while Google recrawls everything. A temporary dip in the days after the switch is normal. A drop lasting more than two months points to a redirect problem, not an adjustment period.
What happens after launch?
We monitor indexing, crawl errors and rankings in the weeks that follow, and fix whatever comes up. With Infinity that phase continues without a limit. With Studio it is covered by the included follow up credits.
Can the redesign be done in stages rather than all at once?
Yes, and it is often the better choice when the site already generates revenue. Templates are rebuilt one after another, addresses are kept, and the effect of each step is measured before moving to the next. If a step degrades something, you see it on one part of the site instead of discovering it across the whole thing.