Google PageSpeed Insights
Free public testShows available real-user Chrome data separately from a simulated Lighthouse run. Compare the Mobile and Desktop tabs.
Open testing website ↗
← All free tools
Website Speed Test · Free guide
What can your website's loading clues tell us?
Get a quick server-side HTML check, then open deeper speed testers with guidance on what their results actually mean.
- Independent testing resources
- Practical improvement advice
- Relevant platform tips when clues are found
Website Speed Test
Start with your website
We'll inspect only publicly visible homepage HTML for clues and prepare links to independent testing websites.
Reliable, independent testing
Start with a quick check, then compare independent tests.
Enter a public website above to inspect its initial HTML and prepare testing links. You can also open any of the independent tools below now.
Trusted website testing services
Best starting point for Core Web Vitals and Lighthouse recommendations
GTmetrix
Limited free featuresDetailed waterfall, page weight, scripts, images and load visualization. Test settings and some features may require an account or paid plan.
Open testing website ↗WebPageTest
Free options; limits applyExplore requests, connection timing, filmstrip-style visual progress and test locations. Availability varies by plan.
Open testing website ↗DebugBear Speed Test
Free one-off testA one-off test with loading details and explanatory recommendations, plus optional deeper monitoring.
Open testing website ↗Pingdom Tools
Free public testA helpful breakdown of files, request timing and overall load behavior from a selected test location.
Open testing website ↗These are independent third-party services. Google PageSpeed Insights receives the entered URL through its analysis link; if Google changes its URL behavior, paste the address manually. The other services open with the URL copied where browser permissions allow. Features, limits and signup requirements vary.
Understand common speed findings
Largest Contentful Paint (LCP)
When the main content becomes visible. If high, inspect the hero image, font loading, response time and render-blocking resources. A good field LCP is 2.5 seconds or less.
Interaction to Next Paint (INP)
How responsive the page feels when someone interacts. If slow, investigate long JavaScript tasks, heavy widgets and costly event handlers. A good field INP is 200 ms or less.
Cumulative Layout Shift (CLS)
Whether content moves unexpectedly. If high, reserve space for images, ads and embeds, and investigate late-loading fonts. A good field CLS is 0.1 or less.
Time to First Byte (TTFB)
How soon the server starts responding. If high, inspect hosting capacity, server and page caching, database work and CDN configuration. Interpret it by connection and test location.
Improvements worth investigating
Reduce image weight
Serve appropriately sized modern formats such as WebP or AVIF where supported. Set intrinsic dimensions, use responsive srcset, and avoid lazy-loading the main above-the-fold image.
Load only necessary scripts
Investigate chat widgets, analytics, animation effects and page builders. Defer or delay nonessential scripts only after verifying menus, forms and consent controls still work.
Improve hosting and caching
Test TTFB from your audience's region. Review full-page caching, CDN behavior, compression and browser cache headers. Do not cache personalized pages.
Reserve space and prioritize content
Reserve layout space for images and embeds, preload truly critical resources only, and test font loading. Optimize what people see first rather than chasing a score.
Not sure which result matters?
We can turn speed reports into a practical plan.
Share the findings or your website address with us. We can help prioritize improvements without promising arbitrary scores.