Fix Slow Website Performance
To fix slow website performance you first need to know where the time goes: the server, the theme, third-party scripts or oversized media. We measure real-user data, find the few changes that matter most and make them without breaking the site.
What you can expect to move
- Primary KPI recovered
- Cost per result
- Conversion rate
- Time to fix
Why “fix slow website performance” rarely happens with one channel
Slow sites rarely have one cause. Usually it is a mix: a shared server with a slow time to first byte, a page builder loading every widget on every page, a stack of tracking tags fired before content, and hero images uploaded straight from a camera. Plugins promising instant speed often add their own overhead, and caching set up badly can serve stale prices or broken carts. Lab scores from PageSpeed Insights also tempt people to chase a number rather than what users feel on a mid-range Android phone over mobile data.
Work begins with field data from the Chrome UX Report and the CWV report in Search Console, then profile the slowest templates with WebPageTest and Lighthouse. That shows whether LCP, INP or layout shift is the real issue. Fixes are ranked by effort and effect: hosting and CDN, image formats and sizing, script deferral, font loading, database clean-up. You get a record of what we changed, before and after measurements, and rules your team can follow so the site stays fast after the next redesign.
We find the constraint first, then put the right specialist services under one plan and one owner, so every change is measured against the same outcome.
How it all comes together
Diagnose
Baseline the metric, find the constraint and size the opportunity.
Design
Choose the service mix and sequence that removes the constraint fastest.
Deploy
Specialists execute in parallel under one plan and one owner.
Optimise
Weekly iteration against the outcome, not vanity metrics.
Services that deliver this solution
Each one is a specialist discipline. Together they remove the constraint.
Website Speed Optimization Services
LCP, INP and layout shift fixes for heavy scripts, images, fonts and hosting, tested on real mobile conditions.
ExploreTechnical SEO Services
Crawling, indexing, rendering, redirects, schema and page speed fixed with developer-ready tickets.
ExploreWebsite Development Services
WordPress, Webflow, Next.js and custom builds that load fast, track properly and stay easy to edit.
ExploreWebsite Infrastructure Optimization Services
Server, caching, database and CDN tuning that fixes slow time to first byte and keeps sites fast during traffic spikes.
ExploreWhat we measure
Primary KPI recovered
Baselined in week one and reported monthly.
Cost per result
Baselined in week one and reported monthly.
Conversion rate
Baselined in week one and reported monthly.
Time to fix
Baselined in week one and reported monthly.
Your first three months
Diagnose & quick wins
Audit, tracking fixes, baseline and the first quick wins live.
Build & launch
Core changes shipped across the service bundle; testing begins.
Optimise & scale
Double down on what works, cut what does not, plan the next quarter.
You may also be interested in
Case studies & resources
Real-world results and practical reading to help you plan your next step.
Client stories
How similar work has played out for other businesses.
Helpful resources
Guides, tools and articles our team recommends on this topic.
Questions we often hear
Straight answers to the things clients ask us most. If yours isn’t here, just ask.
How long does it take to fix a slow website?
Will a speed plugin fix my website's performance?
How quickly can you help us fix slow website performance?
Do we need all the services in the bundle?
Can you work with our in-house team?
Talk it through with someone who has done it before.
A free 30-minute session with a senior Nians strategist. You leave with a prioritised plan, whether or not you work with us.