"My site loads slowly and I have slipped in Google — are the two connected?" The short answer is yes, but not in the way most people assume. This article explains what speed really does for your ranking, how to measure your site, and the five most common causes of slowness.
Speed alone will not put you first
Google uses hundreds of signals for ranking, and speed is only one of them. A fast site with weak content will not outrank a competitor with strong content.
What speed really does is break the tie between two otherwise equal pages. More importantly, speed is not only an SEO matter — your real loss is not in the rankings, it is the visitor who closes the page before ever seeing it.
What Google measures: Core Web Vitals
Google assesses speed with three concrete measures. The names are technical, the meanings are simple:
- LCP — when did the main content appear? The moment the visitor thinks "right, the page has loaded". Under 2.5 seconds is considered good.
- INP — how quickly does it react when I click? You tapped the menu and nothing happened for a second; that is this. Under 200 milliseconds is good.
- CLS — does the page jump while you read? You start reading, an image loads above and the text shifts down. This is the most irritating and the easiest to fix.
The real issue: a slow site loses customers
Set rankings aside for a moment. A visitor will not wait for a page that does not open — they hit back and move to the next result. So slowness hits you twice: Google receives the signal that nobody stays on this page, and that visitor is already lost.
This is why it is more accurate to treat speed work as a conversion job, not an SEO job.
Measure your site in two minutes — for free
Enter your address into Google's PageSpeed Insights. It scores both mobile and desktop and lists exactly which file is holding you back. The "Opportunities" section of that report is your to-do list.
Look at the mobile score; the desktop score is almost always better and will mislead you. Most of your visitors arrive on a phone.
The five most common causes
- Unoptimised images. Uploading a 4 MB phone photo as-is is by far the most common cause. Images should be resized to the dimensions they are actually displayed at and converted to a modern format such as WebP.
- Unused code. Off-the-shelf themes and plugins ship hundreds of kilobytes of CSS and JavaScript you never use. The browser still has to download and process all of it.
- Too many third-party services. Every chat bubble, map, web font and tracking tag means another connection to another server. With five of them, seconds pass before the page becomes visible.
- Images without dimensions. If width and height are not declared, the browser cannot reserve space and the page jumps when the image loads. A one-line fix with a visible result.
- Caching switched off. If a returning visitor downloads everything again, something is missing in your server configuration.
A concrete example
Results from the clean-up on our own site: image weight went from 3.33 MB to 1.58 MB (down 53%), stylesheets from 349 KB to 184 KB (down 47%), and font files from 4.3 MB to 1.3 MB — without losing a single image and without changing how the pages look.
Most of this came not from writing something new but from deleting what was never used. On most sites, that is where the biggest win is.
Where to start
In order: images first (biggest win, lowest risk), then unused code, then third-party services. Do not start without measuring — the PageSpeed report tells you what is actually slowing you down, so you do not have to guess.
If you would like us to look at where your site stands, write to us through the free quote form. We will tell you plainly what needs doing and how much work it is.
