Overall Performance Score (0–100)
Get a composite score reflecting how well your page performs across all Lighthouse metrics. Scores above 90 are considered excellent by Google's own standards and correlate with stronger search rankings.
Instantly test your website's performance score, Core Web Vitals, and get specific recommendations to improve your speed and Google search ranking.
Our tool uses the official Google PageSpeed Insights API — the same data Google uses when ranking your website in search results. No third-party estimates, no guesswork.
Get a composite score reflecting how well your page performs across all Lighthouse metrics. Scores above 90 are considered excellent by Google's own standards and correlate with stronger search rankings.
Measure the three Core Web Vitals that Google uses as direct ranking signals. Each has specific thresholds that determine whether your page passes or fails Google's Page Experience check.
Every report includes specific, actionable suggestions ranked by estimated impact — image compression, unused JavaScript removal, render-blocking resource fixes, and server response time improvements.
Switch between mobile and desktop to compare performance on each device. Since Google uses mobile-first indexing, your mobile score directly determines how Google evaluates your site for ranking purposes.
Google Lighthouse audits more than just speed. Your report also includes Accessibility, Best Practices, and SEO scores — all of which influence how Google perceives the quality of your website and content.
No registration, no subscription, no usage limit. Enter any public URL and receive your full Google PageSpeed Insights report immediately. Test your own site or benchmark against any competitor.
Core Web Vitals are Google's official metrics for measuring real-world user experience. They became direct Google ranking signals in the June 2021 Page Experience update — making them essential for any serious SEO strategy.
LCP measures how quickly the largest visible element on your page — usually a hero image or headline — fully loads and renders. A fast LCP signals the page is working and useful. Google's target is under 2.5 seconds. Anything above 4 seconds is classified as Poor and will negatively affect your rankings.
FID measures the delay between a user's first interaction — a click, tap, or key press — and when the browser begins responding to it. A high FID means your page feels sluggish and unresponsive, increasing bounce rates. Google's threshold for a Good FID is under 100 milliseconds. Heavy JavaScript is the most common cause.
CLS measures the total amount of unexpected layout movement that occurs while the page loads. When elements jump around — buttons move before you can click them, text shifts as images load in — it frustrates users. Google requires a CLS score below 0.1. Setting explicit dimensions on images and ads is the most effective fix.
Google PageSpeed Insights scores every page from 0 to 100. The score is weighted across multiple metrics including LCP, FID, CLS, Time to Interactive, and Total Blocking Time. Here is what each range means for your site.
Your page loads fast and delivers a strong user experience. This is the target range for competitive SEO performance. Pages here typically achieve lower bounce rates, higher conversion rates, and stronger positions in Google search results. Monitor regularly after every significant site change.
Your page is functional but noticeably slower than Google's ideal. Users on mobile or slower connections will experience delays. Pages in this range risk losing ground to faster competitors. Review your report recommendations and prioritise the highest-impact fixes first.
Your page is significantly below Google's performance standards. Poor scores actively harm search visibility, user experience, and conversion rates. Users abandon pages that take more than 3 seconds to load. Immediate action is required — start with the top opportunities flagged in your report.
Our Google PageSpeed checker requires no account or technical setup. Simply enter a URL and receive your report within seconds.
Paste the full web address of the page you want to test, including https://. You can test your homepage, a specific landing page, a blog post, or a product page — any publicly accessible URL works.
Choose which device type to test. We recommend starting with mobile, since Google uses mobile-first indexing and your mobile PageSpeed score has the most direct impact on where your site ranks in search results.
Press Analyze and wait a few seconds. Our tool sends a live query to the Google PageSpeed Insights API and retrieves your real performance data, Core Web Vitals measurements, and Lighthouse audit results.
Examine your performance score, Core Web Vitals status, and the prioritised list of improvement opportunities. Implement the recommended fixes, then re-run the test to measure the impact of each change over time.
The most common causes of a low PageSpeed score — and exactly how to fix each one for measurable, lasting improvements.
Images are the single most common cause of slow pages. Convert to modern WebP or AVIF format for superior compression at equivalent quality. Compress before upload using Squoosh or ShortPixel. Add explicit width and height attributes to prevent layout shifts, and use loading="lazy" on below-fold images.
Unused and render-blocking JavaScript causes poor First Input Delay and Time to Interactive scores. Minify all JS and CSS files to remove unnecessary characters. Defer non-critical scripts using the defer or async attribute. Remove unused CSS with PurgeCSS. On WordPress, WP Rocket handles this automatically.
Configure cache-control headers so returning visitors load assets from their browser cache instead of re-downloading them. Enable Gzip or Brotli compression on your web server to reduce HTML, CSS, and JavaScript file sizes transferred over the network — cutting transfer sizes by 60–80%.
A CDN distributes your static assets across a global network and serves them from the server closest to each visitor, dramatically reducing latency. Cloudflare offers a free CDN tier for any website. For WordPress, Cloudflare or BunnyCDN offer the best performance-to-cost ratio.
Slow server response time (TTFB) negatively impacts every performance metric. Shared hosting frequently causes TTFB above 500ms. Upgrading to managed cloud hosting, a VPS, or a specialist managed WordPress host like Kinsta or WP Engine can bring TTFB below 200ms and dramatically improve your baseline score.
Analytics, live chat widgets, social embeds, ad scripts, and A/B testing platforms all add load time and block the main thread. Each third-party script adds a DNS lookup, connection, and download. Remove or defer anything not essential to core functionality — each removal can save hundreds of milliseconds.
Google confirmed page speed as a ranking signal for desktop searches in 2010 and extended it to mobile with the Speed Update in 2018. The June 2021 Page Experience update elevated this further by making Core Web Vitals — LCP, FID, and CLS — explicit ranking signals. This means the technical performance of your page is now evaluated alongside content quality, backlinks, and relevance when Google decides where to rank your site.
The business case is equally compelling. Research published by Google shows that as page load time increases from 1 second to 3 seconds, the probability of a mobile user bouncing increases by 32%. At 5 seconds, that figure reaches 90%. A slow website does not just rank lower — it loses the traffic it does receive.
The link between page speed and revenue is well documented. Walmart found that improving load time by one second increased conversions by 2%. Amazon estimated that a 100ms improvement in page load time translated to a 1% increase in sales. For any website with a commercial purpose — selling products, generating leads, or growing subscribers — speed is a direct revenue lever, not a technical detail.
The psychological reason is simple: slow pages break trust. When a page takes more than 2–3 seconds to load, users question whether the site is reliable or worth their time. A fast, smooth experience creates an immediate positive impression that carries into how users perceive your brand and offers.
Google completed its transition to mobile-first indexing in 2023, meaning it primarily crawls and indexes the mobile version of every website. Your Google search rankings are determined by how your mobile site performs — not your desktop version. If your mobile PageSpeed score is 45 and your desktop score is 85, Google ranks you based on 45. This is a critical and frequently misunderstood point.
Google PageSpeed Insights provides two types of data. Lab data comes from Google Lighthouse running in a simulated environment — a standardised device with a throttled network connection. It is reproducible and useful for debugging. Field data (CrUX — Chrome User Experience Report) reflects the actual experience of real visitors to your site over the past 28 days, collected from Chrome users who have opted into telemetry.
A gap between lab and field data is normal. Your field data reflects the diversity of your real visitors — different devices, connection speeds, and locations. Focus on improving both: lab data gives you specific technical insights, while field data confirms whether those changes are making a meaningful difference for real users.
Website performance is not static. Content updates, plugin changes, new third-party integrations, and server changes can degrade your score without any intentional action. Best practice is to run a speed check after every significant update, at least once per month for active websites, and immediately any time you notice an unexplained drop in organic traffic. Consistent monitoring is the only reliable way to catch regressions before they cause lasting SEO damage.
Answers to the most common questions about Google PageSpeed Insights, Core Web Vitals, and how to use this tool effectively.
Yes — our tool queries the official Google PageSpeed Insights API, so the data you receive is identical to visiting pagespeed.web.dev directly. You get real Google measurements, not estimates from a third-party tool.
Yes. Since the June 2021 Page Experience update, Core Web Vitals (LCP, FID, CLS) are official Google ranking signals. A poor score makes it significantly harder to outrank faster competitors with comparable content quality — particularly on mobile.
Google simulates different conditions for each device. Mobile tests use a throttled 4G connection and a mid-range device, resulting in a lower score. Because Google uses mobile-first indexing, always prioritise improving your mobile score first.
PageSpeed scores vary slightly between tests due to network conditions and server response variability. A variance of 5–10 points is normal. Run the test three times and take the average. Consistent scores below 50 across multiple runs reliably indicate a real issue.
Google classifies scores of 90 or above as Good, 50–89 as Needs Improvement, and 0–49 as Poor. For competitive SEO, aim for 90+ on both mobile and desktop with all three Core Web Vitals passing their respective thresholds.
Yes. You can test any publicly accessible URL — including competitors' websites, landing pages, or blog posts. Benchmarking against direct competitors helps identify whether speed is a differentiating factor you can exploit to gain rankings.
Google Lighthouse is the open-source auditing tool that powers PageSpeed Insights. It measures Performance, Accessibility, Best Practices, and SEO. PageSpeed Insights takes Lighthouse's lab data and combines it with real-world field data from the Chrome User Experience Report (CrUX).
Not always. Many common issues can be resolved on WordPress using plugins like WP Rocket or LiteSpeed Cache without writing code. For server configuration, custom code optimisation, or critical rendering path issues, involving an experienced developer will yield faster, more reliable results.
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