---
tytul: "Page Load Speed: How to Make Your Website Faster"
opis: "Measure your page load time with several tools: PageSpeed Insights, GTmetrix, Pingdom, Lighthouse and GA4. Learn how to use them in this guide."
adres: https://justidea.agency/en/blog/how-to-improve-page-load-speed/
serwis: "JustIdea Agency"
jezyk: pl
zrodlo: automatyczny odpowiednik strony HTML, generowany przy każdym buildzie
---
Article
# Page Load Speed: How to Make Your Website Faster
Measure your page load time with several tools: PageSpeed Insights, GTmetrix, Pingdom, Lighthouse and GA4. Learn how to use them in this guide.
[ Wojciech Wabno SEO Specialist](https://justidea.agency/en/author/wojciech-wabno/) 18 April 2024 30 min read 26 sections
 Web Development
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**In this article**
1. 01Page load speed: how to make your website faster
2. 02Why is load speed important?
3. 03How to measure website speed: measurement tools
4. 04Google PageSpeed Insights: how it works and what it measures
5. 05GTmetrix: a detailed analysis of page performance
6. 06Pingdom Website Speed Test: real-time performance monitoring
7. 07Lighthouse: a comprehensive analysis of page quality
8. 08Google Analytics 4 and load speed
9. 09What affects page load speed? Key factors
10. 10Image optimisation: format, size and compression
11. 11Lazy loading: delayed loading of resources
12. 12Video on the page
13. 13Using browser caching
14. 14Minification and code optimisation: JS, CSS, HTML
15. 15Redirect chains
16. 16Eliminating render-blocking resources
17. 17Asynchronous file loading
18. 18Hosting and the server's role in site load speed
19. 19Gzip compression: faster data transfer between server and browser
20. 20PHP version and page load speed
21. 21The HTTP/3 protocol
22. 22What is TTFB, and why does it affect page speed?
23. 23Cloudflare CDN: site speed and security
24. 24Summary: how to improve page load speed
25. 25Frequently asked questions about page load speed
26. 26Also check out:
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Every second counts. Mobile users abandon slow-loading pages within a few seconds, and website load speed today isn't just a matter of comfort: it's one of Google's official ranking factors, directly tied to Core Web Vitals. Improving Core Web Vitals usually requires the technical team to work with marketing, and a [marketing agency](https://justidea.agency/en/services/digital-marketing-agency/) is what ties the two together.
Whether you're just starting to check your site's speed with tools like Google PageSpeed Insights or Lighthouse, or you're after more advanced optimisation methods, you'll find practical tips here suited to different levels of technical knowledge.
## Page load speed: how to make your website faster
In today's fast-changing online world, **page load speed** is a key element that can decide the success or failure of your online presence. Users expect pages to load almost instantly.
In this article we'll focus on how to **speed up your website**, not just to satisfy users but also to improve its position in search results. We'll dig into the techniques and tools that will help you **optimise load speed**, from simple changes you can make yourself to more advanced methods that require specialist knowledge. Whether you're a developer or a less technical person, you'll find valuable tips here to help make your site faster and more competitive.
## Why is load speed important?
A slow-loading page isn't just user frustration, it's a real loss. Since 2021, Google has included [Core Web Vitals](https://justidea.agency/en/services/websites/website-speed-optimization/) as a ranking factor, which means page load speed directly affects search rankings. The longer a user waits, the greater the chance they'll go back to Google and click a competitor's result.
Load speed optimisation covers both simple changes that don't require technical knowledge, such as compressing images or enabling caching, and more advanced methods that require changes to the server, code or hosting configuration. In this article you'll find practical tips for both groups.
## How to measure website speed: measurement tools
To understand how to **speed up your website**, you first need to know exactly what challenge you're dealing with. There are several tools you can use to measure **your page's load speed**, giving you valuable pointers on which areas need optimising. **Here are some of the most popular tools that will help with this analysis:**
- **Google PageSpeed Insights**: a free tool from Google that assesses page load speed on both mobile and desktop devices. It also provides recommendations on how to improve your results.
- **GTmetrix**: offers a detailed analysis of page load speed, showing key performance indicators and suggestions for improvements.
- **Pingdom Website Speed Test**: a tool that gives you insight into page load time and a performance assessment, along with specific optimisation recommendations.
**Using these tools, you can quickly diagnose performance problems** and identify the first steps towards speeding up your website. Remember that even small improvements can significantly affect user experience and your position in search results.
## Google PageSpeed Insights: how it works and what it measures
Google PageSpeed Insights and page speed
[Google PageSpeed Insights (PSI)](https://justidea.agency/en/services/websites/website-speed-optimization/) is one of the most valued tools among webmasters and SEO specialists. It analyses a page's content and generates specific recommendations for improving load speed on both mobile and desktop devices.
After you enter a URL, the tool assesses the page's performance along two dimensions. The first is performance optimisation: the assessment is based on [Core Web Vitals](https://justidea.agency/en/services/websites/website-speed-optimization/) metrics: [Largest Contentful Paint (LCP)](https://justidea.agency/en/services/websites/website-speed-optimization/), [Interaction to Next Paint (INP)](https://justidea.agency/en/services/websites/website-speed-optimization/) and [Cumulative Layout Shift (CLS)](https://justidea.agency/en/services/websites/website-speed-optimization/). The second is optimisation recommendations: a list of specific changes to implement, including reducing server response time, removing render-blocking resources and optimising images.
Regularly monitoring your PageSpeed Insights results lets you track optimisation progress and react quickly to regressions before they affect your search rankings.
## GTmetrix: a detailed analysis of page performance
GTmetrix and website loading
GTmetrix is an advanced website performance analysis tool that combines performance tests with specific optimisation recommendations. It analyses pages using metrics such as [Time to First Byte (TTFB)](https://justidea.agency/en/services/websites/website-speed-optimization/), Fully Loaded Time and Total Page Size, giving you a detailed picture of what's slowing your site down.
One of GTmetrix's standout features is its test history: the ability to track performance changes over time, which lets you assess the real impact of each optimisation you make. The tool also lets you test a page from different locations around the world, which matters for sites with an international reach. Every report points to specific elements to improve, along with their priority and estimated time savings.
## Pingdom Website Speed Test: real-time performance monitoring
Pingdom Website Speed Test and load speed
Pingdom Website Speed Test is a popular tool for analysing and monitoring website performance, valued for its clear interface and wide range of features. It analyses pages for load time, resource size and the number of HTTP requests, identifying the elements slowing your site down the most.
Every analysis ends with a performance score compared against benchmarks, so you can immediately see how your page stacks up against others. The tool points to specific components to improve and provides practical recommendations, without requiring advanced technical knowledge. This makes Pingdom useful for beginners and experienced SEO specialists alike.
One of Pingdom's standout features is the ability to continuously monitor your site in real time. The tool can automatically alert you to performance drops or site downtime, which is especially useful for high-traffic sites, where every minute of downtime has a real cost.
## Lighthouse: a comprehensive analysis of page quality
Page load speed: Google Lighthouse
Lighthouse is an open-source tool from Google for analysing website quality, valued for its comprehensive approach that goes beyond performance alone. The report covers five categories: performance, accessibility, best practices, SEO and Progressive Web App. Each one gets a score from 0 to 100, letting you quickly see which areas need attention.
You can run the analysis directly in Chrome DevTools (the Lighthouse tab), through PageSpeed Insights or from the command line, which is useful for automating tests in CI/CD environments. The result isn't just a number, but a detailed list of specific issues, explaining why a given element is slowing down the page and how to fix it.
In practice, Lighthouse is a starting point for optimisation: the performance section points to render-blocking resources, uncompressed images or JavaScript files that are too large. The SEO section checks basic technical elements such as meta descriptions, heading tags and indexability. Running tests regularly after every major site change lets you catch regressions before they affect your actual search results.
## Google Analytics 4 and load speed
Google Analytics 4 logo
Google Analytics 4 isn't a tool for measuring page speed (that's what PageSpeed Insights or GTmetrix are for), but it provides something those tools don't: data on how load speed translates into real user behaviour.
GA4 automatically records performance-related events, including INP (Interaction to Next Paint), a Core Web Vitals metric that measures a page's responsiveness to user interactions. This lets you correlate technical results with business data: do pages with a higher INP have a higher bounce rate? Do slower pages convert worse? These are questions GA4 lets you answer in the context of your specific site and its users.
Custom reports focused on load speed provide practical value: you can compare load time against conversions, revenue or engagement across different sections of your site. This translates technical optimisation into the language of business results, which makes it easier to prioritise actions and justify investment in performance.
## What affects page load speed? Key factors
Page load speed is affected by several layers at once: resources, code, the server and connection architecture. Optimising images and JS/CSS files usually has the biggest impact: large, uncompressed files are the most common cause of slow loading. The number of HTTP requests matters just as much: every element on the page requires a separate request to the server, which is why combining files and [lazy loading](https://justidea.agency/en/services/websites/website-speed-optimization/) matter so much.
On the server side, what matters most is hosting quality, the server's location relative to the user and implementing a CDN, which delivers resources from the geographically nearest node. Server response time (TTFB) also depends on the PHP version, cache configuration and protocol: HTTP/3 shortens connection setup time compared to older versions.
External scripts are a separate category: ads, analytics tools and plugins loaded synchronously can block page rendering regardless of how well-optimised the site's own resources are. On dynamic sites, there's also database performance to consider: poorly optimised queries slow down page generation before anything even reaches the browser.
## Image optimisation: format, size and compression
Optimising images on a website is a key element of improving load speed. Properly managing the format, size and compression of photos can significantly cut load time without sacrificing visual quality. Here are a few tips for managing images effectively.
**Choosing the right format:**
- **JPEG**: Ideal for photos and images with lots of colour. JPEG allows for significant compression, reducing file size while keeping acceptable quality.
- **PNG**: Better for images with transparency and graphics where sharp edges matter. PNG offers better quality at a larger file size compared to JPEG.
- **WebP**: A modern format offering excellent compression while keeping high image quality. WebP is supported by most modern browsers and can be used for both graphics and photos.
- **SVG**: Excellent for icons and other vector graphics. SVG is an XML-based format, meaning it scales perfectly across different resolutions and sizes, with a minimal file size.
- **AVIF**: The newest image compression format, offering even better compression than WebP while keeping high quality. Supported by all major browsers since 2024. Especially effective for product photos: file size can be 30-50% smaller than with WebP.
### How to optimise graphics
Image compression falls into two types. Lossless compression reduces file size without any loss of quality, and is preferred wherever every detail matters. Lossy compression shrinks the file size significantly at the cost of minor detail, which for product photos is usually imperceptible to the eye. Tools such as TinyPNG or JPEGmini automate this process effectively. It's also important to match image dimensions to the actual display size on the page: placing photos at a higher resolution than needed just unnecessarily adds to load time.
## Lazy loading: delayed loading of resources
Lazy loading is an optimisation technique that delays loading resources, such as images, videos or content blocks, that aren't needed straight away on the page's first load. Instead of downloading everything at once, the browser only loads a given element once the user scrolls close to where it's going to appear.
In practice, on the page's first load, all resources outside the initial viewport are skipped. A script tracks scrolling and dynamically loads further elements just before they become visible. The technique can be applied to images, videos, iframes and other resources that aren't critical for rendering the first screen.
The benefits are noticeable on both the user's and the server's side. A shorter initial load time directly improves your LCP score in Core Web Vitals, which matters for rankings. The server handles fewer simultaneous requests, and mobile users, especially on slower connections or limited data plans, only download the resources they actually see on screen.
### How to implement lazy loading
The simplest method is the native loading="lazy" attribute on the ![]()
or