Rally

03/06/2026

Speed That Sells: Translating Site Performance Into Client Language

Nobody outside our industry cares about render blocking scripts. Here's how to turn the technical layer into a story clients actually want to act on.

By Francesco

Here's the gentle truth about technical performance audits: clients don't care about them.

Not because they're not smart. Because they don't speak that language, they don't need to, and they shouldn't have to. When you hand a client a report full of Lighthouse scores, render blocking scripts, and Largest Contentful Paint metrics, what they hear is "your site is broken in a way I cannot understand."

That's not a winning brief. The job of a good studio is to translate.

What clients actually care about

Reframe everything technical into one of three things:

Will this make me more money? A faster site converts better. People bounce less. More of the visitors I'm already paying to attract turn into customers.

Will this make me look better? A site that feels fast and crisp signals quality. A site that feels sluggish signals neglect. My brand lives inside that feeling.

Will this stop something bad from happening? Google penalising slow sites. Customers giving up before the page loads. Competitors looking sharper than I do.

Every technical finding can be translated into one of those three. If you can't translate it, it probably doesn't matter enough to mention.

How to write a performance report someone reads

The structure that works:

Open with the human story. "Right now, when someone clicks your Instagram link on their phone, they wait four seconds before anything appears. Forty percent of them leave before the page finishes loading."

That's the lede. Not a number. A scene.

Then the so what. "Based on your current traffic, this is costing you somewhere between X and Y leads per month."

Now they're paying attention.

Then the fixes, grouped by impact, not by category. "Three things will fix most of this. Two are easy. One is bigger."

Plain language. Effort versus impact. A client can decide what to prioritise in thirty seconds.

Then, and only then, the appendix. The technical detail goes at the back, for the developer who's going to do the work. It's there. It's not the document.

The thing nobody tells you

Most clients have been handed performance audits before. They've all looked the same. Dense, technical, intimidating. The studio that delivers something readable, decisive, and human is rare.

That rarity is leverage. A well written performance audit can move a client from "thinking about a redesign" to "let's start in two weeks" faster than almost any other deliverable.

It's not about the technical work. It's about how the technical work is told.