Website Speed Checker
Instantly analyse your website's loading performance, Core Web Vitals score, and get specific, actionable recommendations to make it faster. 100% free, no registration required.
Analysing website performance…
This usually takes 5–15 seconds
Results are powered by the Google PageSpeed Insights API. For a comprehensive audit, also check Google PageSpeed Insights and Google Search Console. Need professional help fixing these issues? Contact TeamsFreelancer.
What Is Website Speed and Why Does It Matter for Your Business?
Website speed refers to how quickly a web page loads all of its content and becomes fully usable by a visitor. It is not a single number — it is a collection of different metrics that measure different stages of the loading experience, from the very first byte of data received from the server to the moment a visitor can start clicking and scrolling without any delay.
Speed matters for three critical reasons: SEO rankings, user experience, and revenue. Google confirmed page speed as a ranking factor for desktop searches in 2010 and for mobile in 2018. With the introduction of Core Web Vitals as official Google ranking signals in 2021, speed performance now has a direct, measurable effect on where your website appears in search results. A slow website that fails Core Web Vitals assessments will rank lower than a faster competitor with similar content — regardless of how good your SEO otherwise is.
From a user perspective, the numbers are unforgiving. Studies consistently show that 53% of mobile users will abandon a page that takes more than 3 seconds to load. Each additional second of load time reduces conversions. For eCommerce businesses, a 1-second improvement in load time has been shown to increase conversions by up to 7% — which for a site generating £500,000 per year represents £35,000 in additional annual revenue from a single technical improvement.
Our free Website Speed Checker analyses your website's performance using the Google PageSpeed Insights API, returning your actual Core Web Vitals scores and actionable optimization recommendations — the same data Google's own tools provide, available directly on this page without any sign-up or payment.
Core Web Vitals Explained — What Each Metric Measures
Google's Core Web Vitals are the official performance metrics that directly affect your search rankings. Here is what each one means and the thresholds that separate fast from slow.
Largest Contentful Paint
Measures how long it takes for the largest visible content element on the page — typically a hero image, banner, or large heading — to fully render in the browser viewport. This is the metric most closely tied to perceived load speed from a user's perspective.
Interaction to Next Paint
Measures the time between a user's first interaction (clicking a button, tapping a link) and when the browser responds visually. A high INP score means the page feels sluggish and unresponsive. Google replaced First Input Delay (FID) with INP in March 2024 as a more comprehensive interactivity measure.
Cumulative Layout Shift
Measures how much the page layout unexpectedly shifts during loading. When images load without defined dimensions, ads pop in, or fonts swap — content jumps around. This creates a frustrating experience and can cause users to click the wrong element. CLS scores how stable the visual layout is throughout the page load.
First Contentful Paint
The time from when a user navigates to your page to when the first piece of content — any text, image, or SVG element — is rendered on screen. FCP is the first signal users get that the page is actually loading. A fast FCP reassures users that something is happening, reducing early abandonment.
Time to First Byte
The time from the browser making a request to your server to when it receives the first byte of the response. TTFB reflects your server speed, hosting performance, and CDN configuration. A high TTFB means everything else — painting, rendering, interaction — is delayed before it even starts.
Speed Index
Measures how quickly content is visually displayed during page load. Unlike LCP which tracks a single element, Speed Index measures the overall visual progress of the entire page. A lower Speed Index score means the visible page content fills in faster — making the page feel more responsive even if total load time is similar.
What This Speed Checker Analyses
A comprehensive performance audit powered by the Google PageSpeed Insights API — the same engine behind Google's own speed tools.
Real Google PageSpeed Score
Your performance score is calculated using the Google PageSpeed Insights API — the exact same scoring system Google uses when evaluating your site's speed. Scores range from 0–100 and directly reflect how Google sees your page performance.
Mobile & Desktop Testing
Test your site's performance separately for mobile and desktop users. Mobile performance is especially important — Google primarily uses the mobile version of your site for indexing and ranking, making a good mobile speed score critical for SEO.
Core Web Vitals Metrics
Get actual Core Web Vitals data — LCP, Speed Index, and more — measured against Google's official thresholds. These are the specific metrics that Google uses as ranking signals in its search algorithm.
Actionable Optimization Tips
Receive specific, prioritised recommendations for improving your website's performance — ranked by impact level (high, medium, low). Each tip explains exactly what the issue is and what you can do to fix it.
Page Size Estimation
See the estimated total weight of your page — the combined size of all HTML, CSS, JavaScript, images, and other assets. Large page sizes are one of the most common causes of slow loading, especially on mobile connections.
Fully Free & No Account Needed
This tool is completely free with no registration, no email required, and no usage limits. Run as many checks as you need for as many websites as you want. There is no paid version — everything is available to everyone, always.
How to Check Your Website Speed in 4 Steps
The entire process takes under 30 seconds. Here is exactly what to do and what each step tells you.
Step 1 — Choose Device Type
Select Desktop or Mobile before running the test. Use Mobile if most of your visitors come from smartphones — or if you are trying to improve your Core Web Vitals for Google's mobile-first index. Run both for a full picture.
Step 2 — Enter Your URL
Type or paste any website URL into the input field. You do not need to include https:// — the tool adds it automatically. Test your homepage first, then test your most important landing pages separately, as each page has its own performance score.
Step 3 — Run the Speed Check
Click "Check Speed." The tool contacts the Google PageSpeed Insights API and analyses your page. This typically takes 5–15 seconds. You will see the analysis progressing through the loading steps as the data is fetched and processed.
Step 4 — Review Results & Fix Issues
Read through your score, Core Web Vitals metrics, and optimization recommendations. Start with "High Impact" issues first — these will make the biggest difference to your score and user experience. Use the tips as your action list for improving performance.
What Does Your Speed Score Mean?
Your score sits between 0 and 100. Here is how to interpret it and what you should do based on where you land.
The Top 8 Ways to Speed Up Your Website
These are the most impactful optimizations, ranked by how much they typically improve performance scores. Start from the top.
Optimise and Compress Your Images
Images are typically the largest assets on any web page, often accounting for 50–80% of total page size. Compress images using tools like TinyPNG or Squoosh, convert them to next-gen formats like WebP or AVIF, and always specify image dimensions in HTML to prevent layout shifts (CLS). Lazy-load images that are below the fold so they do not block initial page rendering.
🔴 High ImpactMinify CSS, JavaScript, and HTML
Development code contains whitespace, comments, and formatting that browsers do not need. Minifying removes all of this, reducing file sizes by 15–80% depending on how much developer-formatted code is present. Use our free HTML/CSS/JS Minifier Tool to do this instantly, or use a WordPress caching plugin if you are on WordPress.
🔴 High ImpactEnable GZIP or Brotli Compression
Server-side compression reduces the size of files sent from your server to the visitor's browser during transmission. GZIP typically reduces HTML, CSS, and JS file sizes by 70–90% during transfer. Brotli (a newer algorithm) compresses even more efficiently. Enable this in your hosting control panel or via your .htaccess file — most modern hosting providers support it by default.
🔴 High ImpactUse Browser Caching
Browser caching instructs visitors' browsers to store copies of your CSS, JS, images, and fonts locally after their first visit. On subsequent visits, the browser loads these resources from its local cache instead of downloading them again, dramatically reducing load times for returning visitors. Configure caching via Cache-Control headers in your .htaccess file or through a caching plugin on WordPress.
🔴 High ImpactEliminate Render-Blocking Resources
JavaScript files loaded in your page's <head> section block the browser from rendering any visible content until they finish downloading and executing. Add defer or async attributes to non-critical scripts, move scripts to the bottom of the page, and use CSS media queries to load non-critical stylesheets conditionally.
Use a Content Delivery Network (CDN)
A CDN stores copies of your static assets (images, CSS, JS) on servers located around the world. When a visitor loads your page, assets are served from the server closest to them geographically — dramatically reducing latency and TTFB for visitors who are far from your origin server. Cloudflare offers a free CDN tier that is easy to set up with any hosting provider.
🟠 Medium ImpactUpgrade Your Hosting
Shared hosting plans throttle server resources during peak traffic, causing high TTFB scores. If your site consistently scores poorly on server response time, upgrading to a VPS, managed WordPress hosting (like Kinsta or WP Engine), or a cloud hosting plan (like DigitalOcean or AWS) will significantly improve your baseline performance before any other optimizations are applied.
🟠 Medium ImpactReduce Third-Party Scripts
Each third-party script you load — analytics trackers, chat widgets, social share buttons, ad pixels, heatmap tools — adds HTTP requests and JavaScript execution time to every page load. Audit your third-party scripts and remove any you do not actively use. Load the remaining ones asynchronously or with a delay after the page has rendered to prevent them from slowing down the initial load.
🟠 Medium ImpactThe Real Business Benefits of a Faster Website
Speed is not a technical vanity metric — it has a direct, measurable impact on your search rankings, revenue, and customer satisfaction.
Higher Google Search Rankings
Google uses Core Web Vitals as a ranking signal. Pages that pass all three thresholds — LCP, INP, and CLS — receive a ranking boost over similar pages that fail them. If your competitors are investing in performance and you are not, you will gradually lose rankings even without any change in your actual content quality.
More Revenue & Higher Conversion Rates
Every 100ms improvement in page load time improves conversions. Walmart found that each 1-second improvement increased conversions by 2%. Amazon estimated that 100ms of extra latency cost them 1% in sales. For any business selling online, speed is directly tied to revenue — making it one of the highest-ROI technical investments you can make.
Lower Bounce Rate
When a page takes too long to load, visitors leave before it finishes. Google data shows that as page load time increases from 1 second to 3 seconds, the probability of a bounce increases by 32%. From 1 second to 5 seconds, it jumps to 90%. Faster pages mean more visitors stay, read your content, and convert into customers.
Better Mobile Experience
Over 60% of global web traffic comes from mobile devices. Mobile connections are slower than desktop broadband, so mobile users are disproportionately affected by large page sizes and slow load times. Optimising for mobile speed is no longer optional — it is essential for reaching and retaining the majority of your audience.
Lower Google Ads Cost-Per-Click
Google Ads uses landing page experience as a component of Quality Score. A fast landing page that provides a good user experience receives a higher Quality Score — which directly lowers your cost-per-click and improves your ad position. Improving your landing page speed can reduce your advertising spend while maintaining or improving results.
Competitive Advantage
The majority of websites still have poor performance scores. A site that scores 90+ on mobile is genuinely rare in most industries. By investing in performance optimization, you create a meaningful competitive advantage — better rankings, lower bounce rates, and higher conversion rates than slower competitors operating in the same market.
Frequently Asked Questions About Website Speed
Answers to the most common questions about website performance, this tool, and how to improve your scores.
QHow accurate is this speed checker?▼
This tool uses the Google PageSpeed Insights API, which is the same API that powers Google's own PageSpeed Insights tool at pagespeed.web.dev. The scores and metrics you receive are generated by the same Lighthouse engine that Google uses — so the results are as accurate as Google's own measurements. Results may vary slightly between tests due to real-world network and server variability, which is why running the test 2–3 times and averaging the scores gives the most reliable picture.
QWhat is a good website speed score?▼
Google's official scoring thresholds are: 70–100 = Fast (Good), 40–69 = Needs Improvement, and 0–39 = Slow (Poor). For Core Web Vitals, aim for LCP under 2.5 seconds, INP under 200ms, and CLS under 0.1. Achieving a score of 90+ on both mobile and desktop puts you in the top tier of performance and maximises the SEO ranking benefit. For context, the average score for the top 1,000 websites globally on mobile is around 55–65.
QWhy is my mobile score lower than my desktop score?▼
Google's PageSpeed Insights simulates mobile tests on a mid-range Android device with a throttled 4G connection (approximately 10 Mbps download speed and 40ms latency). Desktop tests simulate a faster connection. This means mobile scores are almost always lower than desktop scores — even for the same page. Mobile scores below 70 are very common. Google's mobile-first indexing means your mobile score is the more important one for SEO purposes.
QDoes website speed directly affect Google rankings?▼
Yes — Google officially confirmed page speed as a ranking factor for desktop in 2010 and mobile in 2018. In 2021, Google launched the "Page Experience" ranking update which made Core Web Vitals (LCP, FID/INP, CLS) official ranking signals. Pages that pass Core Web Vitals assessments receive a ranking boost compared to pages that fail them. However, it is worth noting that content relevance remains the primary ranking factor — speed optimization improves rankings within pages competing on similar content quality.
QMy site scores well here but feels slow — why?▼
PageSpeed scores measure technical loading metrics in a controlled test environment, not the complete user experience in all real-world conditions. Factors like your visitors' actual network speed, browser caching state (first visit vs. repeat visit), server load at different times of day, or slow-loading third-party embeds (e.g. YouTube videos, live chat widgets) can make a site feel slower in practice than a controlled test suggests. For a complete analysis, also check Google Search Console's Core Web Vitals report, which uses real-user measurement data (field data) rather than lab simulations.
QHow often should I check my website speed?▼
Check your site's speed after any significant change — adding new plugins, installing new themes, publishing a content-heavy page, or running a new ad campaign to a specific landing page. For ongoing monitoring, running a monthly speed check on your 5–10 most important pages (homepage, main service pages, top landing pages) helps you catch performance degradation before it significantly impacts rankings and conversions. Also run a speed check after every major WordPress core update or theme update.
QWhat is the fastest way to improve a low score?▼
The three highest-impact quick wins, roughly in order of ease and impact, are: (1) Image optimisation — compress and convert images to WebP format using a tool like Squoosh. Images are often the single biggest contributor to slow load times. (2) Install a caching plugin — if you use WordPress, a free plugin like WP Super Cache or LiteSpeed Cache can dramatically improve your score in minutes without any technical knowledge. (3) Minify CSS and JS — use our free Minifier Tool or enable minification in your caching plugin settings. These three steps alone can often move a score from 40 to 70+.
QCan I check competitor websites with this tool?▼
Yes — you can test any publicly accessible website URL. Testing your competitors' sites is a great way to benchmark your performance against them and identify whether speed optimization is a competitive opportunity in your market. If you score significantly lower than your main competitors on mobile, that is likely contributing to lower rankings. If you score higher, that is a genuine competitive advantage worth maintaining.
QDoes this tool store my data or the URLs I test?▼
No. The URL you enter is sent to the Google PageSpeed Insights API to generate your performance report, but is not stored, logged, or retained by TeamsFreelancer. No cookies are set for tracking, no URL history is saved, and no data about you or your website is collected. Google's PageSpeed Insights API processes the URL under Google's own privacy policy. Your usage of this tool is private.
QI fixed the issues but my score did not improve — why?▼
Performance improvements sometimes take a few hours to reflect in PageSpeed scores because Google may have cached an older version of your page. Clear your site's cache after making changes, wait 1–2 hours, and then retest. Also ensure the fixes are live on your server — not just in a staging environment. If you have fixed the issues flagged by the tool and still see a low score, there may be additional issues not shown in the summary — a full professional performance audit by a developer would identify everything comprehensively.
Need Help Fixing Your Speed Issues?
If your score is below 70 and you are not sure how to fix it — or you simply want an expert to handle it — TeamsFreelancer's web development team can audit and optimise your site professionally.