How to Speed Up Your Website: A Complete Beginner's Guide

Not sure where to start with website speed? This plain-English guide covers the most impactful fixes for any site — no developer required.

Why website speed matters more than ever

Slow websites cost money. A one-second delay in page load time reduces conversions by around 7%, increases bounce rates, and — since 2021 — directly affects where your site ranks in Google search results through Core Web Vitals.

The good news is that the most impactful fixes are often simple. You do not need a developer to make meaningful improvements.

Step 1: Know your current score

Before you fix anything, measure it. Run a free check on your site using Loadzen or Google PageSpeed Insights. You will get a score from 0–100 and a ranked list of issues.

Write down your score. This is your baseline. Every change you make should move that number upward.

Step 2: Fix your images first

Images are responsible for the majority of page weight on most websites. The single biggest performance win for most sites is image optimisation.

What to do:

Convert images to WebP or AVIF format. These are 25–50% smaller than JPEG at equivalent quality.

Compress images before uploading. Tools like Squoosh (free, browser-based) make this straightforward.

Set explicit width and height on all images so the browser reserves space before they load. This prevents layout shifts.

Use lazy loading (`loading="lazy"`) on images below the fold. Never use it on your hero or above-the-fold image.

Step 3: Reduce unnecessary scripts

Every JavaScript file your page loads has to be downloaded, parsed, and executed before the page feels interactive. Third-party scripts — analytics, chat widgets, social media embeds, advertising — are usually the worst offenders.

What to do:

Open your browser developer tools, go to the Network tab, and filter by JS. Look for large files from third-party domains.

Remove scripts you no longer use. Most sites accumulate scripts over time and never clean them out.

Load non-critical scripts with `defer` or `async` so they do not block rendering.

Consider replacing heavy analytics (Google Analytics 4) with a lightweight alternative like Plausible or Fathom if tracking is not critical to your business.

Step 4: Enable caching

Caching stores a copy of your page so returning visitors — and browsers — do not have to reload everything from scratch.

Enable browser caching by setting appropriate Cache-Control headers. Most hosting platforms and CDNs handle this automatically.

For WordPress, a caching plugin (WP Rocket, LiteSpeed Cache, or W3 Total Cache) handles server-side and browser caching in one step.

For Shopify and other hosted platforms, caching is managed by the platform — focus on other areas instead.

Step 5: Use a CDN

A Content Delivery Network (CDN) serves your assets from a server close to your visitor rather than from your origin server. Cloudflare's free plan is the easiest way to add CDN performance to any website.

Step 6: Check your hosting

If your server response time (Time to First Byte) is above 600ms, no amount of front-end optimisation will make your site feel fast. Good shared hosting from providers like SiteGround or Kinsta typically stays below 200ms. Cheap shared hosting can be five times slower.

Measure again

After each change, re-run your speed check. Gains compound — fixing images, then scripts, then caching typically adds up to significantly more than any single fix in isolation.

Run a free check on Loadzen to see exactly which fixes will move your score the most.