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Performance Tool

Free Website Speed Test

Enter your URL to see how fast your site loads on mobile, how it does on Google's Core Web Vitals, what platform it's built on, and how that compares to similar sites, powered by real Google PageSpeed Insights data.

Speed is one signal. See the full picture.

A full Stackra scan grades your SEO, trust signals, AI visibility, and technical health, then hands you a prioritized fix list. Free to start.

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About this website speed test

This free website speed test uses Google PageSpeed Insights to measure how your homepage performs on mobile: how fast your main content appears (LCP), how stable the layout is while it loads (CLS), and how quickly the page responds to taps and clicks (INP). Those three are Google's Core Web Vitals. We translate the raw numbers into one plain-English verdict so you know whether speed is helping or hurting your site.

What is a good LCP, CLS, and INP score?

Good thresholds are LCP at 2.5 seconds or less, CLS at 0.1 or less, and INP at 200 milliseconds or less. LCP measures when the largest content appears, CLS measures unexpected layout movement, and INP measures responsiveness to taps and clicks. Values above these thresholds can make a page feel slow, jumpy, or unresponsive.

Why does the test check mobile and not desktop?

Google ranks the mobile version of your site, and most visitors arrive on a phone. Phones also have slower processors and connections than laptops, so mobile is usually the harder test.

Is responsiveness measured on real visitors?

When Google has real-visitor Chrome data for your site, the responsiveness result (INP) comes from it. When it does not, which is common for smaller sites, we show Google's lab estimate and say so on the result.

Why does my site detect a "platform"?

Most sites are built on a CMS or page builder: WordPress, Shopify, Wix, Squarespace, Webflow, and others. Your platform shapes how fast your site can be: some control the entire rendering stack and ship performance improvements to every site automatically, while others leave optimization entirely up to you. Knowing your platform tells you how much of your speed is in your hands.

How do I compare to other sites like mine?

Speed varies a lot by platform. Here is the share of sites on each platform that pass all three Core Web Vitals on mobile, based on Chrome field data. We show you where your platform's average sits, and where your site falls relative to it.

  • Duda86%
  • GoDaddy Website Builder84%
  • Wix81%
  • Shopify77%
  • Squarespace72%
  • Webflow71%
  • Framer71%
  • Drupal65%
  • BigCommerce64%
  • HubSpot CMS60%
  • Joomla57%
  • WordPress49%
  • Weebly43%

Source: HTTP Archive / Google CrUX, August 2026. Web average: 53%.

Is a website speed test the same as an SEO audit?

Speed is one input into search rankings, but it is not the whole picture. An SEO audit tool also checks your titles, meta descriptions, heading structure, internal links, and whether AI search tools like ChatGPT and Perplexity can read your site. This speed test is a fast first read. The full Stackra scan covers all of it.

What's the fastest thing I can fix?

For most sites, the biggest gains come from image optimization: compressing images, converting to WebP, and reserving space for images so the page doesn't jump around while it loads. If your platform gives you little control over this, switching to a performance-focused theme or app is usually the next-best lever.