Get under the hood of your website to make it faster, smoother and more accessible
Making better digital decisions
At Yoyo Design, we provide technical consultancy and performance work for websites that need a check-up, a tune-up or a thoughtful second opinion. Most sites we look at are doing things technically that are quietly slowing them down, costing them search visibility or making them harder to maintain.
Our team gets under the hood of your Umbraco, Shopify or other website to find the real issues, not just the obvious ones, then either fixes them, recommends what to prioritise or builds the case for the wider work that is genuinely needed.
We work fast, we work practically and we work in plain language. Technical work goes wrong when it disappears into jargon, so we keep our findings clear, our recommendations actionable and our reporting honest.
As a Registered Umbraco Gold Partner with in-house development, design and SEO expertise, our technical recommendations come with the ability to implement them. Not a list handed over to someone else to figure out and quietly forget.
Why do websites quietly get worse over time?
Most websites go live in good shape and slowly drift. Every new integration, plugin, content addition or platform update introduces a bit of weight, a bit of friction or a bit of risk. Performance creeps down. Accessibility issues build up. Technical debt accumulates. None of it is dramatic enough to demand attention until something genuinely breaks or rankings start dropping.
The other half of the problem is that technical work rarely gets the time it needs. Marketing teams ship campaigns. Product teams ship features. The quiet, foundational work that keeps a site fast, accessible and clean tends to wait until it cannot wait any more, by which point the cost of fixing it is far higher than the cost of staying on top of it would have been.
A technical engagement that earns its place starts with what is actually wrong, what it is costing you and what to fix first. That is the difference between an audit that ends up in a folder and one that genuinely makes your website better.
Helping organisations keep their websites fast, accessible and built to last
We start with what your website is meant to do and where it is falling short, not with a generic checklist. Then we work back to the technical changes that will actually move the things you care about.
We shape every technical and performance engagement around:
Honest technical audits - finding what is genuinely holding your site back, not generating a long list of things that look impressive but do not matter.
Real performance gains - faster page loads, better Core Web Vitals and a smoother experience on the devices your users actually use.
Accessibility that genuinely works - improvements that meet WCAG standards and, more importantly, work for real people in the real world.
Cleaner technical foundations - simpler architecture, fewer dependencies and lighter integrations that are easier to maintain and extend.
Recommendations you can act on - clear priorities tied to commercial outcomes, not a 60-page document full of jargon.
Implementation, not just advice - the same team that finds the issues can fix them, so nothing gets lost in translation between agencies.
The aim is a website that is genuinely better after we have worked on it, not just better documented.
Our technical services
Technical consultancy and performance work cover a wide field. Our offering focuses on the areas where we see organisations getting the most lift, and we will be honest if your situation does not need all of them.
Technical Audits & Health Checks
A thorough look under the hood of your Umbraco, Shopify or other website to identify what is slowing it down, breaking accessibility, harming search visibility or creating risk. We test on real devices, dig into the code, architecture and integrations, and come back with a clear, prioritised set of findings rather than a long list of things to maybe fix one day. Useful when something isn't right, when you have inherited a site or when you just want a confident, performance-aware second opinion.
Performance & Speed Optimisation
Focused work to make your website genuinely faster. That means lifting Core Web Vitals, reducing page weight, cleaning up scripts, optimising images, improving caching and addressing whatever else is slowing the experience down. Faster sites convert better, rank better and feel better to use, so the gains compound across SEO, UX and commercial performance.
Integrations & Technical Architecture
Work to connect your website cleanly to the systems you already rely on, whether that is a CRM, ERP, subscription engine, marketing platform or bespoke internal tool. We also help with the wider technical architecture, so integrations do not compound complexity or hurt maintainability. Useful when you are adding new tools, replacing old ones or finding that everything technically works but nothing quite fits together.
Technical Consultancy
Strategic technical advice without the immediate need to build anything. We help you assess a platform decision, scope a technical project, address a specific limitation or get an honest second opinion on a roadmap your team has already drafted. Useful when you do not yet know whether the answer is a new build, a focused fix or a different platform entirely. If you also need a wider commercial view first, our digital strategy work sets the priorities that technical consultancy then delivers against.
Industries we partner with
We work with B2B businesses, charities, membership organisations, professional services firms and ecommerce brands. The common thread is that the website is doing real commercial or operational work and the technical state of it actually matters.
That spans organisations that have inherited a site they did not build, brands whose technical estate has grown faster than the thinking behind it and teams that need a confident technical view to support a decision. Examples of our wider work include:
Vintner for a Shopify rebuild that delivered a 50% increase in time on site and a 33% drop in bounce rate, with award-winning recognition across UX, UI and Innovation
RNLI for a large-scale digital transformation across one of the UK's best known charities, where technical scale and reliability mattered at every step
IAM RoadSmart for digital transformation across a national membership organisation with deep operational integration needs
Zoonou for brand and digital transformation for a growing technology business
Vivobarefoot for a UX-led digital sales tool supporting a sector-leading barefoot footwear brand
If your website has technical debt that is starting to show, or you want a clear view of what is actually slowing it down, we have likely worked through something similar.
Delivering your technical and performance work
Technical work is most useful when it is structured. We deliver in focused phases so you see progress, clear findings and real change rather than a vague retainer with nothing to point at.
Audit and assessment of where your site actually is
Prioritised recommendations tied to commercial outcomes
Implementation across performance, accessibility, integrations or architecture
QA, testing and validation of the changes that are made
Reporting on impact, not just on activity
Optional ongoing technical retainer where it is the right fit
You always know what is being worked on, what is coming next and what the trade-offs are if priorities shift.
Technical and performance credentials
As a Registered Umbraco Gold Partner with in-house development, design, UX and SEO expertise, our technical work is grounded in real platform knowledge, not detached advice. We have done the implementation many times, which is what makes our recommendations credible.
We write regularly on the technical work we do, from the behind-the-scenes magic of website performance to how to optimise your website for accessibility and the European Accessibility Act and what it means for you. If you need accessibility work specifically, we also offer dedicated accessibility services.
We also stay close to the platforms we work on, including Umbraco's roadmap. You can read our take on the latest in Umbraco 17 LTS: stability, speed and security and making SEO friendlier in Umbraco.
Why choose Yoyo as your technical consultancy and performance agency?
Yoyo is a multidisciplinary web design and development agency with technical, performance, accessibility and SEO expertise under one roof. That means we can find the issues, recommend the fixes and actually implement them, without you having to manage two or three different relationships every time something needs work.
We have a track record of award-winning work across digital transformation, ecommerce and platform projects, with a client mix of B2B businesses, charities, membership bodies and product-led brands. Whether you need a one-off audit, a focused performance project or a longer technical partnership, we can help you build something genuinely better.
If you would like to talk through what a technical or performance engagement with Yoyo could look like, get in touch.
FAQ's
What does a technical audit cover?
Performance, accessibility, technical SEO, code quality, architecture, integrations and any platform-specific concerns relevant to your stack. The point of the audit is to surface what is actually holding your site back, in priority order, rather than producing a long generic checklist. We will be clear about what is critical, what is nice-to-have and what does not matter.
How do you make a website faster?
By working through the things that genuinely slow sites down. That includes reducing page weight, optimising images, cleaning up scripts and third-party tags, improving caching and CDN setup, fixing render-blocking issues and addressing whatever is dragging Core Web Vitals down on real devices. We focus on the gains your users will actually notice.
Do you work with Shopify and Umbraco websites?
Yes, both. Our team includes hands-on Shopify developers and we are a Registered Umbraco Gold Partner, so technical work on either platform is grounded in real experience. We also work on other platforms where it makes sense for a specific engagement.
Can you fix accessibility issues on our existing website?
Yes. We audit and remediate accessibility issues on existing sites, aligned to WCAG and the practical needs of real users. For deeper, dedicated work we also offer separate accessibility services. The European Accessibility Act has made this a more pressing topic for many organisations, which we have written about in detail.
Do you handle integrations with third-party tools?
Yes. Common integrations include CRMs, ERPs, marketing automation, analytics, payment platforms, subscription engines and bespoke internal systems. We approach integrations with the wider architecture in mind, so adding a new tool does not compound complexity or slow the site down.
Will you actually implement the changes or just advise?
Both options are available. You can use us purely for audit and advice if you have an internal team to implement, or take it all the way through to implementation with the same people who found the issues. We are honest about which makes more sense for your situation rather than always selling the bigger piece.
How long does a technical audit take?
Most audits run between two and four weeks depending on the size and complexity of the site, the platform and the depth of work you need. Smaller, focused reviews can be faster. Larger estates with several integrations and a long history take longer. We will agree on the scope and timing up front so there are no surprises.
How do you measure performance improvements?
With real numbers, not vibes. That means before and after measurements on Core Web Vitals, page speed metrics, accessibility scores, real-user data where available, and ultimately the commercial outcomes the work was meant to improve. You can read more on how we approach this in our writing on tracking real performance in Umbraco.