Look beyond a single score
Measure Largest Contentful Paint, Cumulative Layout Shift, Total Blocking Time, First Contentful Paint and Speed Index alongside browser category scores.
beta mode
Experience / Page speed
Make every first impression faster.
Explore the metrics behind a smoother page experience, with readable reports and practical next steps.
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Mobile and desktop context
Device settings help explain the conditions of a test. Compare runs under consistent conditions instead of treating one score as a universal result.
Lab data, clearly labeled
A browser lab run is a controlled observation. It is not a field Core Web Vitals assessment of your actual visitors.
Current availability
Real mobile and desktop speed tests run in an isolated browser testing service. Full reports include audit evidence, resource waterfalls, transfer breakdowns and captured visual progress. No domain verification is needed. Free reports contain a summary.
Follow the page loading sequence
Read page loading milestones alongside the category scores and Speed and Structure grades. Premium includes the network waterfall; Business adds captured images and filmstrips when the browser produces them.
Understand the main measurements
LCP describes when the largest visible content appears. CLS measures visual movement during the run. TBT measures blocking work after first content appears. These lab results describe the tested visit, not every visitor experience.
Repeat with the same settings
Paid plans can compare mobile and desktop separately and request three sequential audits for a median-score report. Three audits consume three speed tests. Caching and changing third-party resources can still produce variation.
Choose the depth you need
Free provides desktop summaries and summary downloads. Premium adds mobile measurements, detailed performance reporting and email delivery. Business unlocks audit evidence, technical assessment, repair guidance and browser images.
Your next step starts here
Get started with LoadVM ↗Find what slows your page down.
Run a speed test and review the measurements for your selected device.