PERFORMANCE · SEO · BEST PRACTICES

Page Speed Analyzer

Get instant Lighthouse-powered reports for any URL. Analyze performance, SEO, accessibility, and Core Web Vitals. Boost your rankings — free forever, no signup.

Updated: October 4, 2026 Built by Khalil Rahman Runs in your browser
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Google evaluates mobile and desktop performance differently.

Analyzing Performance…

This usually takes about 15–30 seconds.

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Performance
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SEO Score
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Best Practices
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Accessibility
Core Web Vitals & Key Metrics
First Contentful Paint –
Largest Contentful Paint –
Total Blocking Time –
Cumulative Layout Shift –
Speed Index –
Time to Interactive –

Powered by Google Lighthouse · Data reflects real-world performance

URL Encoder / Decoder
Output
Result appears here…

No data stored: We send only the URL you enter to Google's public Lighthouse API for analysis. Results are cached in your browser for 1 hour — nothing is stored on our servers or sold to third parties.

Why Page Speed Matters More Than Ever

Page speed isn't a nice-to-have — it's a ranking factor, a conversion driver, and a cost saver.

Confirmed Ranking Factor

Google uses Core Web Vitals as a direct ranking signal. Slower pages are pushed down in search results — even if the content is better.

Higher Conversion

Every 100 ms of load time costs roughly 1% in conversions. Amazon famously found that 100 ms delay cost them 1% of revenue.

Mobile-First Indexing

Google crawls the mobile version of your site first. A site that loads in 3 seconds on desktop might take 10+ seconds on mobile.

Lower Server Costs

Optimized pages use less bandwidth and CPU. On high-traffic sites, faster pages translate directly into reduced hosting bills.

Why Choose SkillsInsider Analyzer?

FeatureSkillsInsiderTypical Alternatives
Data PrivacyOnly the URL you enter reaches Google's APIOften tracks your IP & behavior
CostFree forever, no accountPaywalled after N runs
Metrics ShownAll 4 categories + 6 Core Web VitalsUsually only Performance score
Local Caching1-hour cache for instant repeat runsRe-analyzes every time
Mobile vs DesktopOne-click toggleSeparate pages
Ads & TrackersMinimal, with consentIntrusive ads
Pro Tip: Run both mobile and desktop analyses for the same URL. If desktop scores 90+ but mobile scores below 60, your biggest win is usually image optimization and third-party script reduction — the two heaviest mobile bottlenecks.

Understanding the Four Lighthouse Categories

Performance

Measures real loading speed: FCP, LCP, TBT, CLS, Speed Index, and TTI. Scores below 50 mean visitors wait too long.

SEO

Checks meta tags, mobile-friendliness, crawlability, structured data, and HTTPS. Low SEO scores are usually easy fixes.

Best Practices

Looks at HTTPS usage, modern image formats, deprecated APIs, and browser console errors visible to visitors.

Accessibility

Audits color contrast, ARIA labels, form labelling, and keyboard navigation. Ideal target is 90+ for all sites.

How To Improve Speed

Apply these proven techniques to boost your Core Web Vitals scores.

Optimize Images

Use next-gen WebP/AVIF formats and lazy-loading to dramatically reduce page weight and improve LCP.

Minify JS/CSS

Remove unnecessary characters, comments, and whitespace from your code to speed up parsing time.

Server Response

Reduce TTFB (Time to First Byte) by using high-quality hosting, CDNs, and server-side caching.

Browser Caching

Set proper cache-control headers so repeat visitors load your pages instantly from local storage.

Font Optimization

Self-host fonts with font-display: swap and preload key font files to eliminate render-blocking.

Enable Compression

Enable Gzip/Brotli compression on your server to reduce HTML, CSS, and JavaScript transfer size by up to 70%.

Optimizing Web Platforms with Light Structure Architecture

Achieving peak technical performance requires moving away from bloated backend dependencies and heavy frameworks. Modern search engine ranking models prioritize user experience metrics, pushing web creators toward a light structure layout philosophy. By processing calculations, file strings, and data variables directly in the user's browser via lightweight client-side scripts, you eliminate unnecessary Time to First Byte (TTFB) latencies and lower hosting compute overhead to zero.

Key Core Web Vitals Targeted

When diagnosing a URL, our analyzer tracks structural layout paint timelines to pinpoint rendering bottlenecks:

  • Largest Contentful Paint (LCP): The timestamp when the primary visual element renders on the viewport. Target: under 2.5 seconds.
  • Interaction to Next Paint (INP): Page responsiveness latency when users click interactive elements. Target: under 200 ms.
  • Cumulative Layout Shift (CLS): Structural stability — how much content unexpectedly shifts during loading. Target: under 0.1.

Eliminate Critical Request Dependency Trees

A major issue holding platforms back from 100/100 scores is request chaining. Forcing a browser to download an external font or block DOM processing with a synchronous API script creates a performance bottleneck. To optimize your asset delivery pipeline, self-host optimized .woff2 fonts locally, apply font-display: swap; rules in your root CSS, and defer execution of all non-essential scripts until after the layout interactive state resolves.

Page Speed Analyzer score dashboard preview

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Frequently Asked Questions

Everything you need to know about Core Web Vitals and page speed.

Core Web Vitals are a set of specific factors that Google considers important in a webpage's overall user experience, including loading speed (LCP), interactivity (INP), and visual stability (CLS). They are a confirmed ranking signal in Google Search.
Test your website after every major update — such as adding new plugins, changing themes, or uploading large content blocks. Regular monthly checks help catch regressions early before they impact rankings.
Yes, completely free. Your results are cached locally in your browser for 1 hour so repeat analyses are instant. No signup required, no data sold, and only the URL you enter reaches Google's public Lighthouse API.
Google Lighthouse simulates different CPU throttling and network conditions for mobile vs desktop. Mobile uses a slower CPU multiplier and 4G throttled network, which often results in lower scores than desktop — and this is why mobile-first optimization matters most.
Only publicly reachable URLs can be analyzed, because Google's Lighthouse API fetches the page from its own servers. For local development, use Chrome DevTools' built-in Lighthouse panel (F12 → Lighthouse tab) which runs entirely on your machine.
90–100 is Good (green), 50–89 is Needs Improvement (orange), and 0–49 is Poor (red). For Performance, aim for 90+ on mobile for competitive niches. For SEO, Accessibility, and Best Practices, always target 95+.
Typical runs finish in 15–30 seconds. The first run for a URL is always slowest because Google Lighthouse spins up a fresh browser simulation. Repeat runs within an hour are instant thanks to local caching.
No. We don't store your URLs, and we don't log the results. The only thing that ever leaves your browser is the URL you type, which is sent to Google's PageSpeed Insights API to fetch the report. Your history stays entirely in your browser's localStorage.
Reviewed and maintained — This analyzer is tested against real-world sites and updated whenever Google ships new Lighthouse scoring rules. Found a bug? Send us the test case. Last reviewed: October 2026.

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