Page Speed Checker
Test how fast any page loads on mobile and desktop. Get your Google PageSpeed score, real-user Core Web Vitals (LCP, INP, CLS) and a clear list of what to fix first.
Tests are run by Google PageSpeed Insights. We don't store the pages you test.
How to Test Your Website Speed
Three steps to a full speed report.
Enter the Page
Paste the page address — your home page or any important page.
Pick Mobile or Desktop
Choose the device. Google ranks using the mobile version, so start there.
Read & Fix
See your scores, Core Web Vitals and the biggest improvements, ordered by time saved.
Scores
Performance, SEO, more
Shows
Core Web Vitals
Tests
Mobile & desktop
Gives
Top fixes to make
Powered by
Google PageSpeed Insights
Price
100% free
Core Web Vitals: Good, Needs Improvement, Poor
Google's thresholds, measured at the 75th percentile of real visits.
| Metric | What it measures | Good | Poor |
|---|---|---|---|
| LCP — Largest Contentful Paint | How fast the main content appears | ≤ 2.5 s | > 4.0 s |
| INP — Interaction to Next Paint | How fast the page reacts to taps and clicks | ≤ 200 ms | > 500 ms |
| CLS — Cumulative Layout Shift | How much the page jumps around while loading | ≤ 0.1 | > 0.25 |
| FCP — First Contentful Paint | When the first text or image shows | ≤ 1.8 s | > 3.0 s |
| TTFB — Time to First Byte | How fast the server starts answering | ≤ 0.8 s | > 1.8 s |
| Performance score | Lighthouse lab score out of 100 | 90–100 | 0–49 |
What Can You Use It For?
Popular ways people use Page Speed Checker.
SEO
Core Web Vitals are part of Google's page experience signals.
More Sales
Faster pages keep visitors and convert better.
Before & After
Measure the effect of caching, image compression or a new host.
Client Reports
Show clients a clear score and a prioritised fix list.
Tips for the Best Result
- Fix the items at the top of Biggest speed improvements first — they save the most time.
- Large images are the most common problem: compress them and use WebP or AVIF with our free image tools.
- Test the mobile version — Google uses mobile-first indexing.
- Shrink your code with our CSS Minifier, JS Minifier and HTML Minifier.
Frequently Asked Questions
Quick answers about Page Speed Checker.
Enter the page address, choose Mobile or Desktop and click Test Speed. In 15–60 seconds you get your scores, Core Web Vitals and a list of fixes.
Yes, the results come from Google PageSpeed Insights (Lighthouse), shown in a simpler, easier-to-read report.
90–100 is good, 50–89 needs improvement and 0–49 is poor. Many real websites score 50–80 on mobile.
Three measurements from real Chrome visitors: LCP (loading), INP (responsiveness) and CLS (visual stability). Passing all three is good for users and SEO.
The mobile test simulates a mid-range phone on a slow 4G connection, so heavy pages score lower.
Network conditions, server load and ads vary between runs. Small changes of a few points are normal.
Google only has it for pages with enough Chrome visitors. New or low-traffic pages show lab results only.
Yes — 100% free, with no sign-up. There is a fair daily limit per visitor to keep the service fast for everyone.
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