Most sites do not need a rebuild. They need a tune-up. A slow page, a confusing form, a layout that shifts as it loads — these are fixable problems, and fixing them is usually cheaper and faster than starting over. Themewaves optimises live sites for the two things that matter: how fast they feel, and how often visitors do what you want them to do.
Core Web Vitals are the baseline
Google measures real user experience through Core Web Vitals, and those numbers feed both rankings and the way your site feels to a human. We profile against all three and fix the causes, not just the symptoms. Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift each have specific levers, and we know which ones move the needle.
- LCP. Optimise the hero image, preload key assets, and cut render-blocking CSS.
- INP. Reduce heavy JavaScript and break up long tasks that block input.
- CLS. Reserve space for images and embeds so the layout stops jumping.
Where page speed actually leaks
Slowness is rarely one big problem. It is a pile of small ones. Oversized images shipped to phones. A dozen third-party scripts loading in the head. No caching. Fonts that block rendering. We audit the waterfall, find the heaviest offenders, and remove or defer them. The wins compound. A site that loads in under two seconds keeps more of the people who arrive, full stop.
Technical fixes that pay off
Beyond raw speed, plenty of quiet issues drag a site down. Broken redirects. Duplicate content confusing search engines. Missing structured data. Render-blocking resources. Bloated CSS shipping rules no page uses. We work through the technical layer methodically and document what we change and why, so nothing is a black box.
Optimising for conversion, not just scores
A fast site that does not convert is still a problem. Speed gets people to stay; the layout and copy get them to act. We look at where visitors drop off, simplify the path to the goal, sharpen calls to action, and remove friction from forms and checkouts. Then we measure. Optimisation without measurement is guessing.
If you cannot measure the change, you cannot tell whether it worked. Every optimisation we make is tied to a number we can watch.
Optimisation is ongoing, not one-off
A site is never finished. Browsers update, your traffic shifts, competitors move. The best results come from steady iteration — measure, change, measure again. We can run this as a single audit and fix, or as a continuous programme alongside a maintenance plan. If the underlying build is holding you back, our website build service rebuilds from a stronger base, and the broader web development team covers anything in between.
FAQ
How do you know what to fix first?
We audit performance, technical health, and user behaviour, then rank fixes by impact against effort. The cheap, high-impact changes come first so you see results early rather than waiting for a long project to finish.
Will optimisation hurt my search rankings?
Done properly, it helps them. Faster, cleaner, more accessible pages tend to rank better, and we preserve URLs and redirects so existing equity stays intact. We monitor rankings through any significant change.
Can you optimise a site you did not build?
Yes, that is most of this work. We start with an audit to understand the existing setup, then optimise within it. Reach out for a performance review of your current site.