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SB DigitalAgency
Web Development

Website Speed Optimization

Make your site fast on real mobile networks, not just in a lab test.

Website Speed Optimization

Speed work pays for itself faster than almost any other investment. A one-second improvement typically lifts conversions by 2–5% and improves rankings simultaneously — and unlike links, it is entirely under your control.

We optimise against real-user data, not lab scores. That means identifying the specific templates where actual visitors experience delay, fixing the actual causes — usually images, render-blocking scripts, third-party tags and server response — and verifying the improvement in field data over a full 28-day window.

If a plugin-based fix is enough, we say so. If a structural change is required, we quantify the gain before recommending it.

-62%
LCP (mobile)
-68%
Page weight
+3.1pp
Conversion rate

-68%

Typical page weight reduction

The problems we fix

  • Oversized images

    Uncompressed JPEGs and PNGs are the single largest source of page weight on most sites we audit.

  • Third-party scripts blocking render

    Chat widgets, tracking pixels and review tools often add two or more seconds of main-thread work.

  • Slow server response

    Shared hosting without caching or a CDN adds hundreds of milliseconds before your HTML even starts downloading.

How we fix them

  • Modern image pipeline

    AVIF/WebP conversion, correct responsive sizes, lazy loading below the fold, eager priority on the LCP image.

  • Script governance

    Audit every third-party script, defer or remove what is not earning its cost, and set a performance budget.

  • Caching and CDN

    Page caching, object caching, compression at the edge and a CDN with global POPs including the Middle East and South Asia.

Deliverables

What Website Speed Optimization includes

What you actually get

  • Real-user and lab performance audit
  • Waterfall and main-thread analysis
  • Image pipeline implementation with modern formats and responsive sizes
  • Font loading strategy: subsetting, preloading, display swap
  • JavaScript audit: splitting, deferral and removal of unused code
  • Critical CSS extraction and render-blocking removal
  • Caching, compression and CDN configuration
  • Field-data verification report at day 28

Tools & platforms

  • PageSpeed Insights
  • WebPageTest
  • Cloudflare
  • Lighthouse
  • Chrome DevTools
  • Search Console
Process

How we deliver it

  1. 01

    Measure

    Establish field and lab baselines; identify which templates lose real users.

    Week 1

  2. 02

    Diagnose

    Trace each metric back to its source: server, images, scripts, fonts, layout.

    Week 1–2

  3. 03

    Fix

    Implement image, script, CSS, caching and server improvements.

    Week 2–3

  4. 04

    Verify (lab)

    Lighthouse, PageSpeed and WebPageTest confirm the improvements landed.

    Week 3–4

  5. 05

    Verify (field)

    Report real-user improvement after the 28-day CrUX window closes.

    Week 8

FAQ

Website Speed Optimization — common questions

Discuss your website speed optimization project

Book a free 30-minute consultation and get a written plan — whether or not you work with us.