Illumi

Service

Speed optimization

A slow website loses visitors before they've seen the first line. And because much of the traffic is on mobile internet, the difference between three and eight seconds is the difference between an enquiry and a closed tab.

Quote
By scope
Measured in
Before and after
Metrics
Core Web Vitals
Report
With hard numbers

The causes

Why websites are slow.

It's almost always one of the eight causes below. The work starts with measuring, so we know exactly which one applies to you, instead of fixing everything at once.

Heavy imagesThe most common cause. A photo from a phone, uploaded as it is — four megabytes for something displayed at 400 pixels.
An off-the-shelf themeIt carries code for hundreds of cases. The browser downloads all of it, even though you use a small part.
Too many pluginsEach one adds its own files to every page, even where it isn't used.
Render-blocking JavaScriptScripts that stop the page from drawing until they've loaded. Often from third-party services — chat, maps, counters.
No cachingThe server builds the page from scratch for every visitor instead of serving it ready-made.
Slow hostingAn overloaded shared server. Sometimes moving is cheaper than any optimization.
FontsFive weights of two typefaces from someone else's server. The text stays invisible until they arrive.
An old PHP versionThe difference between an old and a current version is measurable, and you get it almost for free.

How it goes

Measure, fix, measure.

Optimization without measuring before and after is a story. With measurement, it's work with a provable result.

01

Measurement

Core Web Vitals, live and from real users, separately for mobile and desktop.

02

Diagnosis

What exactly is slowing it down — in numbers. Usually two or three things account for eighty per cent of the delay.

03

Quote

What will be done, what it will cost and what effect we expect. If we expect little effect, we say so.

04

Fixes

In order of impact. Images and caching first, then the code, the small stuff last.

05

Re-measuring

Same conditions, same tools. That's the only way the comparison is fair.

06

Report

The numbers before and after, with an explanation of what was done for each.

Related services

What else comes into it.

It's rarely just one thing. Here are the services that go with this one, and why.

Questions

About speed.

If your question isn't here, call us — we answer by phone too.

+359 882 95 89 89
How much does it cost to speed up a website?

It's quoted after measuring, because it depends on the cause. Replacing images and setting up caching is quick work; rewriting a heavy theme is a different conversation.

That's why we measure first and tell you what effect we expect — if it's small, it isn't worth paying for.

What are Core Web Vitals?

Three Google metrics for the loading experience: how quickly the main content appears, how quickly the page responds to a tap, and how much the layout jumps around while it loads.

They feed into Google's assessment, but more importantly, they reflect something visitors genuinely feel.

Will I rank higher on Google if I speed up my site?

Speed is one of the factors, but not the strongest. The more tangible effect is that a faster site keeps more visitors and gets more enquiries from the same traffic.

If the goal is ranking, speed is a precondition, not a solution — see SEO.

Can I just install a caching plugin?

Sometimes, yes, and that's the first thing we check. But a cache doesn't fix heavy images and bloated code — it only hides them on repeat visits.

What's more, a badly configured cache serves stale pages, which is a worse problem than a slow site.

Do you work on sites you didn't build?

Yes, and that's the usual case with this service. You don't have to become our client for anything else.

Next step

Let's measure your site.

Send us the address and we'll run a measurement — Core Web Vitals for mobile and desktop, with the specific causes of any slowdown.

+359 882 95 89 89 office@illumi.bg

Sofia, Bulgaria We reply within 24 hours In business since 2012

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Got it.

We'll be in touch within 24 hours on working days. If it's urgent, call +359 882 95 89 89 — we react faster by phone.