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The PageSpeed Insights test on this page scores any public URL for performance, accessibility, best practices and SEO on a 0 to 100 scale. Enter a URL, choose desktop or mobile, and you get load metrics, a page screenshot and a list of fixes in about 30 seconds. It is free and needs no sign-in.
PageSpeed Insights is a report that grades how fast and how well built a web page is. It gives four scores from 0 to 100: Performance, Accessibility, Best Practices and SEO. People use it to find out why a page feels slow and which fixes will help most.
The Performance score comes from timing metrics recorded while the page loads. These include how soon the first content appears and when the largest element on the screen finishes rendering. Google's Search Central documentation describes Core Web Vitals as part of the page experience signals used in search. The commonly cited "good" thresholds are a Largest Contentful Paint of 2.5 seconds or less, an Interaction to Next Paint of 200 milliseconds or less, and a Cumulative Layout Shift of 0.1 or less.
Speed is one signal among many. A fast page with thin content will not outrank a slower page that answers the query far better. Speed works best as a tiebreaker and as a way to keep visitors from leaving before the page loads.
You can run a test in under a minute by entering a URL and choosing a test mode. Follow these steps:
Test one page at a time. A homepage score says little about your product pages or blog posts, so check your most important templates separately.
Say you test a blog post URL in Mobile mode and get these results. The numbers are illustrative, but they show how to read a typical report.
The metrics section shows a Largest Contentful Paint of 4.8 seconds. That is well past the 2.5 second guideline, and it explains most of the weak Performance score. The Page Screenshot shows a large hero photo, which is likely the element being measured. Under Opportunities, you see items such as properly sizing images and reducing unused JavaScript.
Your plan is clear. Resize and compress the hero image, serve it in a modern format, and remove or defer scripts that the post does not need. Then test again. If the score moves from 58 to the 80s and the largest element loads faster, you fixed the right problem. The Accessibility and SEO scores need no urgent work.
Each score is colored and labeled by range, so you can judge it at a glance. The tool uses the same three bands for every category, metric and audit.
| Score | Label | What to do |
|---|---|---|
| 90 to 100 | Good | Keep monitoring after changes |
| 50 to 89 | Needs Work | Fix the top opportunities first |
| 0 to 49 | Poor | Treat as urgent |
This section lists individual timings, each with its own value and color. Start with the red or orange ones. A slow largest element usually points to heavy images, slow server response or render-blocking files. A high layout shift value usually means images, ads or embeds load without reserved space.
Opportunities are changes expected to speed up loading, and many show an estimated saving. Diagnostics are broader findings, such as page weight or the number of requests. Work through opportunities first because they usually give the biggest gain for the least effort.
Passed Audits is a collapsed list of checks your page already meets. Open it to confirm that a fix you made actually registered. If the report shows a warning message, read it before you trust the scores, because it may mean the test did not run under normal conditions.
Anyone responsible for how a page loads can use this report, and the right moment depends on your role.
It is also useful after a redesign or migration. Run a quick pass on your top pages, then check that the pages return healthy responses with the bulk HTTP status checker.
Improving the score means fixing the specific items the report lists, not chasing a perfect 100. These practices cover the most common wins.
Compress and resize images, and make sure the largest image above the fold is not lazy-loaded. Remove unused scripts, defer non-critical JavaScript and limit the number of web fonts. Each change is small, but together they often cut seconds from load time.
Slow responses start before the browser draws anything. Confirm that text files are compressed with the GZIP compression checker, and see whether your host supports modern connections with the HTTP/2 and HTTP/3 checker. You can also review caching rules in your response headers with the HTTP header checker.
Accessibility, Best Practices and SEO appear in the same report for a reason. Missing image descriptions lower accessibility and weaken image search, so scan them with the image alt text checker. A bloated page with little visible text can also be worth a look with the code to text ratio checker.
This report is a snapshot of one page, in one mode, at one moment. It does not crawl your whole site, and it will not tell you how every real visitor experiences the page. Scores can shift when your server is busy, when a third-party script is slow, or when content changes.
The page does not include an export button, so to keep a record, save the screenshot of the results or note the scores and dates in your own spreadsheet. Use the report to find direction for fixes, and judge success by whether pages load faster and visitors stay.
Ready to see where your page stands? Enter your URL above, choose Desktop or Mobile, and run the PageSpeed Insights test. Fix the top opportunity, test again, and repeat until your key pages land in the green. For more checks on speed, headers and crawlability, browse the website audit and performance tools.
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