A 90+ mobile score means your page passes Google's own test on a mid-range phone with a slow connection. It won't rank you by itself. It removes the reasons people leave before they see your phone number.
What the score is
Paste any address into PageSpeed Insights and Google loads the page in a test browser, then scores it from 0 to 100. Green is 90 to 100, orange 50 to 89, red below 50. The score is made of five measurements, and Google publishes how much each one counts:
Total Blocking Time
How long the page freezes while it loads code. A frozen page ignores taps.
Largest Contentful Paint
When the main thing on screen shows up: your headline, your hero photo. Google calls 2.5 seconds or less good.
Cumulative Layout Shift
Whether things jump around as the page loads. That jump is how people tap the wrong button.
First Contentful Paint
When anything at all appears, so the visitor knows the page is coming.
Speed Index
How quickly the visible part of the page fills in.
Always read the mobile tab. It simulates a slower phone and connection, so it's the hard test. A designer showing you a desktop 99 is showing you the easy one.
What changes for your customer
Picture someone in a car park in Fremantle, one bar of signal, comparing three businesses. They don't know what a layout shift is. They know the first site showed them a phone number straight away, and the second one froze when they tapped it.
- Visitors see what you do and your phone number before they lose patience.
- Buttons respond the first time, so calls and form sends actually go through.
- Nothing jumps under their thumb, so nobody taps the wrong thing and gives up.
- Google sees a page that passes its own page experience checks.
- If you pay for ads, each click lands on a page that doesn't waste it.
- The site feels like a business that has its act together.
What the research says
The best-known study is Deloitte's Milliseconds Make Millions (2020). Across 37 brands, making mobile sites 0.1 seconds faster went with 8.4% more conversions for retail sites and 10.1% for travel sites.
Two caveats. These were big brands with a lot of traffic, so your numbers will differ. And the gains showed up when every page in the visit got faster, not just the home page. The lesson for a small business is the same though: speed changes what people do, not only how the site feels.
What it doesn't do
A fast page with nothing useful on it still won't rank. Google puts the most relevant answer first and uses speed as part of judging page experience. So speed is the floor, not the whole building.
That's why my Premium package pairs the 90+ guarantee with a page for each service and each area you serve, local keyword research and schema markup. Speed keeps the visitors. The content brings them in.
Proof from my own site
In September 2026 I tested my own home page on mobile with Lighthouse, the engine behind PageSpeed Insights. It scored 61. Not great for someone who sells speed.
Before
61
Main content shown at 5.7 s
After
93 to 95
Main content shown at 2.6 to 2.7 s
No redesign. The fixes were the same ones I see on most small business sites:
Photos straight off a phone
A 4,000-pixel image shown at 400 pixels wide. The visitor downloads ten times what they see.
The hero image loaded last
The biggest image on the page is set to wait its turn. My own home page had this: about 1.6 seconds lost before the photo even started downloading.
Scripts nobody needs on that page
Chat widgets, trackers, sliders and page-builder code that load on every page whether they're used or not.
Want to test your own site step by step? See why a fast website gets more local clients.
What my guarantee covers
On the Premium package, your site scores 90 or more on PageSpeed Insights, mobile test, on launch day. If it doesn't, I keep working on it at no cost until it does. Every package is built the same way, but the number is only written into Premium.
After launch, the first year of hosting and maintenance is included, then it's $100 a year. That covers the small things that drag a score back down, like resizing a photo someone uploaded straight from their phone. All the details are on the pricing page.
Questions about PageSpeed
Want a site that passes the mobile test?
Three fixed-price packages, from a one-page site to the Premium build with the 90+ guarantee. Or send me your current address and I'll tell you what's slowing it down.