BrisTechTonic is a Bristol SEO agency that helps UK businesses get found on Google, the local map pack and the AI assistants they now ask, like ChatGPT and Perplexity. Replatforming means moving your website off the system it runs on now onto one that suits how you actually publish, sell and get found, then rebuilding on it without losing the rankings, content and speed you already have. BrisTechTonic handles the build side: helping you pick the right system, a clean rebuild made to load fast and set up for search engines and AI, done hand in hand with the redirect and matching-up work that protects your traffic. Custom builds start at £1,800, with hosting and management on our own platform from £100 a month.
Replatforming is what you do when the website system itself has become the ceiling. You can refresh the design and improve the content, but if the system underneath is slow, rigid or a fight every time you publish, you keep paying for the same limits over and over. Moving to a better system gets you off it, and done well it is the moment when speed, structure and how easily you can run the site all step up at once.
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The risk is that a replatform is really two jobs under one name. There is the build, choosing the new system and rebuilding on it, and there is the move, carrying every ranking, link and bit of hard-won standing across web addresses that have almost certainly changed. Treat it as just a build and the site can launch looking perfect, then lose a third of its Google traffic three weeks later because the redirects were an afterthought. The drop arrives long after the launch team has moved on.
We run both sides as one job. The system is chosen for how you actually work, the rebuild is done by hand, light and set up to rank, and the address map, redirects and matching-up checks are planned as the pages go up rather than bolted on at the last minute. Ideally we are involved before the system is even decided, because the cheapest place to protect your traffic is in the plan, not the clean-up.
This is experienced work by design. Weighing one system against another, deciding what carries across and what is cut, and planning a redirect map are judgement calls, not a checklist run on autopilot. Our experienced team has spent years on exactly this kind of move, which is why we take on the ones other agencies called too complicated.
If Google cannot crawl it, nothing else you do counts.
These are industry figures, not our own results, and we do not invent numbers. Technical work rarely shows on the page, but it is the ceiling everything else runs into. No outcome is ever guaranteed.
Website replatforming, broken down.
Platform selection and fit
The decision that shapes everything after it. We look at how you publish, sell and grow, then recommend the system that fits, with the pros and cons spelled out in plain terms rather than a sales pitch. The goal is a system that stops holding you back, not the newest name.
A clean rebuild, not a heavy port
We rebuild on the new system rather than dragging the old site across as-is, dropping the heavy add-ons, unused templates and clutter the old system built up. What earned your rankings is kept and improved; what was quietly slowing you down does not come along.
Mapping your web addresses and redirects →
A new system almost always changes your web addresses, and that is where traffic disappears. Every address carrying rankings or links is listed, ranked by importance, and given its own new home, so the switch keeps the standing you spent years building instead of losing it.
Content and template parity
The new site has to say what the old one said wherever that earned rankings. As we build, we check the main text, the little titles and descriptions Google shows in search, and the links between your pages all match up, so a tidier design does not quietly delete the pages and words that were doing the work.
Speed on the new system →
A replatform is a fresh chance to get page speed right, or to make it worse under a heavier build. We build speed and steady, reliable pages into the new system from the start, so the site launches fast and stays fast as it grows.
AI-ready structure →
Pages built so machines can clearly tell what each part is, with the right extra search details baked into the new templates, so AI assistants can read, understand and quote your pages. It is the same groundwork that helps you show up in normal Google search, not a separate add-on tacked on after launch.
Some of our recent work.
More on website replatforming.
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What clients say about working with us.
“I've had the pleasure of working with Chris on several SEO projects for my websites in the health field. He was definitely been able to demystify things so that I felt able to make decisions with him and feel confident they were the right ones. For a non-techie, that is worth gold! I look forward to working with Chris again and warmly recommend him to anyone who - like me - is unsure about all things SEO.”
“I was recommended by my branding partner to use Chris and his team last year. I can’t recommend them highly enough. They are very responsive , easy to communicate with and great at translating techy stuff when needed. They are now an essential part of my business model”
“We've been working closely with Chris, Hannah and the team for over 12 months now. As a small company with ambitious growth plans, it was incredibly important that we made the right choice on who to trust with our SEO. 18 months later, we're totally thrilled with our experience so far and our growing online presence within our market. We'd happily recommend BTT and their services to other SMEs. Drop them an enquiry!”
Real people on your account, not a faceless agency.
You work directly with the senior people who do the work, a small Bristol team you will actually get to know, not a call centre or an account manager relaying messages.
Meet the team →
The way we run Website replatforming.
Scope the platform and the risk
We work out why your current system is holding you back, what the new one needs to do, and how much of your search traffic is at stake. That shows us which system genuinely fits and where the risk sits before anything is locked in.
Choose the system and plan the build
We recommend the system with the pros and cons laid out, then plan the rebuild: what carries across, what is cut, and how the new site should be shaped for search, AI and how your team actually works.
Map every web address before anything moves
We list your current web addresses with their rankings, links and value and give each one a new home on the new system. That map is the master reference the whole switch is checked against, so nothing valuable is dropped by accident.
Rebuild clean, fast and structured
We build by hand on the new system, light and easy for machines to read, with the extra search details and a tidy, deliberate set of web addresses built in from day one, so the site is ready to rank and be quoted at launch rather than fixed afterwards.
Test on a staging copy, then switch behind redirects
We check the redirects, that the pages match up, that search engines can read them, and that everything shows correctly on a test version while there is still time to fix things, then launch with the full redirect map in place and confirm Google is reading and listing the site properly rather than assuming it worked.
Monitor through the risky weeks
The first weeks after the switch are where problems show up. We keep a close eye on whether your pages are getting listed on Google, on your rankings, and on any reading errors, and act fast on anything that slips, so a small issue is fixed in days rather than found in a later report.
How do we approach Website replatforming?
The right platform, chosen for fit
We recommend a system based on how you publish, sell and grow, with the pros and cons spelled out plainly rather than sold to you. The goal is a system that stops holding you back, not the newest name on the market.
A clean rebuild, not a heavy port
We rebuild on the new system rather than dragging the old site across as-is, dropping the heavy add-ons, unused templates and clutter the old platform built up. What earned your rankings is kept and improved; what was slowing you down does not come along.
Traffic protected through the switch
Every web address that carries rankings or links is mapped and pointed to its new home one for one, and we check the new pages match the old ones as we build, so your standing with Google moves across to the new system instead of leaking away in the weeks after launch.
Engineered for speed and AI from the start
Core Web Vitals, semantic HTML and the right schema are built into the new templates from the first commit, so the site launches fast and readable by search and AI assistants rather than being fixed after go-live.
Real people doing the work, and putting their name to it.
You deal with our small, experienced Bristol team directly, from the first call to every monthly report.
Meet the team →What Website replatforming puts on your desk.
Are we the right fit for you?
Thinking of switching from another agency?
Moving your Website replatforming to us is more straightforward than staying somewhere that is not working. You keep everything you already own, we pick up without a gap, and we can run the whole thing for you or work alongside your team and your developers, whatever suits.
A free look first
We review what your current agency has done, tell you straight what is worth keeping and where the quick wins are. No obligation to move.
You keep what's yours
Your site, content, Google Business Profile and analytics stay in your name. We work with what you already have; nothing is held hostage.
A clean handover
We map the work across, set a plain-English baseline in the first few weeks, and carry on from there. No starting from zero, no quiet ranking gap.
Three-month minimum, then rolling monthly on 30 days’ notice. No long lock-in, no exit fees.
Who runs your replatform, and how?
Most replatforms lose the very traffic they were meant to improve, and it usually happens where build and SEO get split apart. BrisTechTonic is the trading name of Bryley Ltd, a team of experienced people with years of combined experience between them, and yours is planned, chosen, built and switched by the people who have done it before, not handed down to someone still working out how a new system behaves on your live traffic. We treat it as one job, the right system and a clean rebuild on the build side, a mapped and monitored move on the SEO side, because splitting them up is exactly where replatforms go wrong.
Experienced hands on the decision and the build
Choosing the system, deciding what to keep and cut, and the redirect plan are judgement calls, so they sit with experienced people rather than a checklist run on autopilot.
Build and transfer, run together
We do not rebuild first and worry about search at the last minute. The address map, matching-up checks and redirects are planned as the new system is built, so the switch is under control rather than a gamble.
Honest about what fits
If a smaller change would serve you better than a full replatform, or if a particular system is the wrong fit for how you work, we say so plainly rather than selling you a rebuild you do not need.
Website replatforming: common questions.
How much does website replatforming cost?
A custom rebuild starts at £1,800, priced to your system, site size and how much has to move, with hosting and management on our own platform from £100 a month where it is our build. We price it properly on a call once we understand the current site and the switch, rather than quoting a headline number that changes later.
What is the difference between replatforming and a website migration?
Replatforming is the build side, choosing a new system and rebuilding on it. A migration is the SEO work that protects your rankings and links through any change of web addresses, including a replatform. We run both together, because a replatform almost always changes your addresses, and moving them without a mapped, monitored plan is where traffic quietly disappears.
Will we lose our search rankings when we replatform?
Not if the switch is handled properly. A new system usually changes your web addresses, so we map every address that carries rankings or links, point it to its new home one for one, check the new pages match the old, and keep a close eye on whether Google is listing your pages after launch. That is the difference between a controlled move and the drop most careless replatforms suffer weeks later.
Which platform will you replatform us onto?
Whichever genuinely fits how you publish, sell and grow. We look at your team, your content and your commercial needs, then recommend with the pros and cons laid out. The point is a system that stops holding you back, not loyalty to one option forced onto every client.
Can you work alongside our existing developers?
Yes. We can run the whole replatform, or take the SEO and structural side, the address map, redirects, matching-up and extra search details, and hand your developers a clear brief to build to. We are used to slotting into a build team rather than replacing one.
How long does a replatform take?
It depends on the size of the site and the system, but the shape is always the same: planning and choosing the system, then the rebuild and address mapping side by side, testing on a staging copy, a switch behind the redirect map, and close monitoring through the first weeks live. The riskiest time is those first weeks, so we stay on it through that period.
Do you build the new platform so AI assistants can read it?
Yes. We build the new templates so machines can clearly tell what each part is, with the right extra search details, so AI assistants can read, understand and quote your pages. It is the same groundwork that helps you show up in normal Google search, not a separate trick added afterwards.
Do you host and maintain the replatformed site?
Yes. We host and look after the replatformed sites we build on our own platform from £100 a month, keeping them fast, secure and healthy as the site changes. We don't take on hosting for sites built elsewhere.
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