Pull up your website on your phone. Count how long it takes to load.

If it takes more than three seconds, a meaningful proportion of visitors are leaving before they see a single word you have written.

This is not a niche technical issue. It is a direct commercial problem – and it affects the majority of manufacturing and engineering websites in the UK right now.

Google data shows that over half of mobile website visits are abandoned if a page takes longer than three seconds to load. Many manufacturing websites load in five to eight seconds on mobile. That is not a minor inconvenience. It is enough to lose the majority of visitors before they see anything.

The pattern we see most often: desktop performs acceptably, mobile is significantly slower. This is typical of websites built or last updated more than three years ago, when desktop was the priority and mobile was treated as secondary.

More than half of all web searches now happen on mobile, including B2B searches. A procurement manager researching suppliers during a commute, or an operations director checking capabilities on their phone between meetings, will not wait for a slow site. They will go back to search results and click the next option.

Google also uses mobile speed as a direct ranking factor. A slow mobile site is penalised in search rankings independent of everything else. You can have strong content, a complete Business Profile, and solid reviews – and still rank lower than a faster competitor.

Mobile speed is both a user experience problem and an SEO problem. The two effects compound.

Uncompressed images – a site built using high-resolution photos direct from a camera can easily have images ten times larger than needed. Each adds loading time.

Outdated platform – sites built on older CMS versions or frameworks that have not been maintained often lack performance optimisations that are now standard.

Unoptimised code – JavaScript and CSS that loads unnecessarily on every page adds delay. On a fast desktop connection the effect is barely noticeable. On mobile it compounds quickly.

No caching – without browser caching, a returning visitor has to reload every element from scratch on every visit.

Go to Google PageSpeed Insights. Enter your website address. The free tool returns a prioritised list of exactly what is causing your mobile score to drop, with an estimated time saving for each fix.

Typical results look like: “Reduce unused JavaScript (potential saving: 1.2s)” or “Properly size images (potential saving: 0.8s).” This is the brief for your developer. Not a vague request to “make it faster” – a prioritised list of specific changes, each with a measurable impact.

A competent developer can address the top three or four issues in half a day. The typical result is a mobile score improvement of 20 to 30 points and a load time reduction of two to three seconds.

Speed is one component. Most manufacturing websites also have a number of other technical issues accumulating that affect both user experience and search ranking. Missing meta descriptions. Images without alt text. Broken links. Pages that do not render correctly on certain screen sizes.

None are critical in isolation. Collectively they build a picture that search engines read as a lower-quality site. Google Search Console – free – surfaces these issues automatically. Treating them as routine maintenance rather than occasional fixes keeps your site performing consistently.

Website speed improvements do not generate a direct, visible ROI in the way a new machine does. The benefit is in opportunities you stop losing – visitors who stay rather than bouncing, rankings that hold, enquiries from people who would otherwise have left.

The cost of fixing mobile speed is typically low. The work is not complex. It just does not get prioritised because the problem is invisible until you measure it.

Measure it today. The results will tell you everything you need to know.