What a 95+ Performance Score Actually Means for Your Revenue

Somewhere in your web person's world there's a tool called Lighthouse. It's built into the Chrome browser, it's free, and it grades any website from 0 to 100 on four axes: performance, accessibility, best practices and SEO. Most owners have never heard of it, which suits parts of the industry fine — because it's the closest thing websites have to an MOT, and it can be run on your site, by you, in about a minute, without asking anyone's permission.

The scores sound technical. What they measure is money. Here's the translation.

Performance: the patience tax

The performance score is mostly about how long a visitor stares at nothing. Every additional second of load time loses a slice of your visitors — not because they're unusually impatient, but because on a phone, on mobile data, with a thumb hovering over the back button, waiting is the only cost they can avoid instantly. Slow pages don't feel slow to their owners, who visit on office wifi with everything cached. They feel slow to strangers, who are the only visitors that matter. A score in the 90s means nearly everyone who clicks actually arrives. A score in the 50s means you're paying for traffic — in ads, in SEO effort, in reputation — and then turning a chunk of it away at the door.

Accessibility: the customers you can't see

The accessibility score checks whether people with imperfect vision, motor control or hearing can use your site — text contrast, button sizes, labels a screen reader can speak. Framing this as charity misses the business reality: a meaningful share of any customer base is older, visually tired, or browsing one-handed on a bouncing train. Low-contrast grey-on-white text doesn't just fail a standard; it fails every customer over fifty reading in sunlight. Accessible sites are simply usable sites, and usable sites convert more of the people who arrive.

The other two axes, quickly

• Best practices: is the site built to current safety and engineering standards — the padlock, no outdated tricks, nothing browsers now punish?
• SEO: can search engines properly read and index the page — titles, structure, the technical basics that decide whether you're findable at all?

Why we made 95 a floor, not a target

Here's the industry's open secret: most professionally built small-business sites score far below 90 on mobile performance, because heavy themes, page builders and bolted-on plugins are the path of least resistance, and because no client ever asked for the number. We took the number out of the conversation entirely: no site ships below 95. It's a gate in the pipeline, measured on every build, not a stretch goal for special projects. AI does most of the work, the measurement is automatic, and Paul reviews everything before it ships — but the score isn't his opinion. It's Chrome's.

Run yours tonight

Open your site in Chrome, right-click, choose Inspect, find the Lighthouse tab, select mobile, and run it. Sixty seconds, four numbers. If they're strong, congratulations — you're better built than most, and whoever made your site deserves a nice email. If they're not, you've just learned something your visitors have known for years, and you've learned it with evidence instead of a sales pitch. Either way: any firm quoting you for web work, ask them what scores they'll commit to. Watch what happens to the conversation.