Page Speed Checker

Accurate real browser speed audits, Time to First Byte (TTFB), Core Web Vitals (LCP, INP, CLS), resource waterfalls, and evidence-based performance recommendations.

Popular examples: https://google.comhttps://wikipedia.orghttps://github.com
Time To First Byte (TTFB)

Measures server response latency, DNS lookup, and SSL handshakes using actual browser navigation timings.

Core Web Vitals

Audits LCP, INP, and CLS metrics using standard session window methodology and accurate browser DevTools timing APIs.

Resource Waterfall & Payload

Inspects HTTP/2 multiplexing, Gzip/Brotli compression, oversized images, third-party domain costs, and long tasks.

Executing Real Browser Navigation & Speed Audit…

Measuring TTFB, Core Web Vitals (LCP, INP, CLS), network waterfall, and asset payloads.

Test Environment:Mobile393 × 852Chrome 1202026-08-25
Measurement Source:Browser MeasurementOrigin
Performance Score

0 / 100

Good
Time to First Byte (TTFB)

0 ms

Target: ≤ 800ms
Total Load Duration

0 ms

Measured Browser
Transfer Payload Size

0 KB

Compression
Performance Comparison (vs Previous Run):Score: 0TTFB: 0msLoad Time: 0msLCP: 0s
Stored from previous run
Multi-Run Performance Variability (Median Selection)
Evidence-Based Page Speed Optimization Priorities
Measured Core Web Vitals & Page Experience Standard
Metric NameMeasured ValueData SourceGoogle TargetStatus Rating
LCP (Largest Contentful Paint)
Core Web Vital		Not availableBrowser Measurement≤ 2.5sGood
INP (Interaction to Next Paint)
Core Web Vital		Not availableBrowser Measurement≤ 200msGood
CLS (Cumulative Layout Shift)
Core Web Vital		Not availableBrowser Measurement≤ 0.10Good
FCP (First Contentful Paint)
Not a Core Web Vital		Not availableBrowser Measurement≤ 1.8sDiagnostic
TTFB (Time to First Byte)
Server Response Timing		0 msNetwork Measurement≤ 800msGood
Largest Contentful Paint (LCP) Diagnostic Analysis
Cumulative Layout Shift (CLS) Session Window Shifts
Server Response Timings & Redirect Chain
Navigation Timings
DNS Lookup Duration:0 ms
TCP Connection Duration:0 ms
SSL / TLS Handshake:0 ms
Time to First Byte (TTFB):0 ms
DOM Interactive Event:0 ms
DOM Complete Event:0 ms
Total Page Load Event:0 ms
HTTP Protocol & Redirect Chain
Resource Asset Waterfall & Payloads
Images & Fonts Optimization Audit
Third-Party Domain Network Impact
Rendered Viewport Screenshot & Browser Console Errors
Rendered Screenshot
No screenshot available
Browser Console Errors & Warnings
Bulk Page Speed Test Summary

Total Tested

0

Good Rating

0

Needs Improvement

0

Poor Rating

0

Median LCP

0s

Median TTFB

0ms

Target URLScoreRatingTTFBLCPCLSStatus

What is a Page Speed Checker?

A Page Speed Checker measures the load time, server response latency, Core Web Vitals, and HTTP transfer efficiency of a web page. Search engines like Google prioritize fast-loading pages in ranking algorithms, and user experience relies heavily on swift rendering speeds.

Frequently Asked Questions (FAQ)

TTFB is the duration from when the browser makes an HTTP request to when it receives the first byte of data from the web server. Good TTFB should be under 800 ms.

Google uses page speed and Core Web Vitals as an official ranking signal for mobile and desktop searches.