Page Speed Analyzer - Optimize Core Web Vitals

Analyze Your Site Page Speed

Run a fast, comprehensive page speed audit to uncover slow pages, prioritize fixes, and improve Core Web Vitals for better SEO and UX.

Page Speed Analysis Report

Website URL:

Pages Analyzed

8

Scanned

Opportunities

3

Found

Performance Score

Included

Good

Avg. Load Time

None

Fast

Top Performance Issues

Performance Audit Summary

% Passing (Good) 60%
% Needs Improvement 40%
% Poor (Critical) 100%

Targeted improvements to image compression and JavaScript deferral could reduce average load time further.

Powering 145,000+ Performance Audits Worldwide

Join thousands of developers and marketers optimizing their page load speeds.

0
Pages Analyzed
Monthly
0
Bottlenecks Fixed
Last 30 Days
0 %
Avg Speed Boost
Post-Optimization
0 %
Accuracy
In LCP Tracking

Master Your Core Web Vitals

Stop losing rankings and customers due to slow-loading pages. PageSpeed Pro instantly analyzes your site to identify render-blocking resources, large payloads, and scripting bottlenecks.

Analyze Largest Contentful Paint (LCP)
Assess Cumulative Layout Shift (CLS)
Find unoptimized images and CSS
Discover JavaScript execution delays
Performance Dashboard

Complete Performance Suite

Everything you need to debug, optimize, and accelerate your site.

SERP Feature Detection

LCP Diagnostics

Essential

Identify the exact elements dragging down your Largest Contentful Paint metric.

Resource Sizes

Payload Analysis

Analytics

Measure and break down your page weight by scripts, stylesheets, and media.

JavaScript Execution

JavaScript Execution

Deep Dive

Find long-running tasks and scripts that block main thread responsiveness.

Visual Stability

Visual Stability (CLS)

Strategy

Track exactly which DOM elements are shifting during page load.

TTFB Analyzer

Server Response Time

Insights

Measure TTFB and discover backend delays holding your frontend back.

Image Optimization

Image Opportunities

Opportunity

Highlight oversized images and formats that need next-gen conversion.

Speed Benchmark

Competitive Benchmarking

Competitive

Compare your load times against your top competitors in real-time.

Export Audits

Export Developer Audits

Reporting

Download comprehensive technical CSV reports for your engineering team.

LCP Detection

LCP Diagnostics

Essential

Identify the exact elements dragging down your Largest Contentful Paint metric.

Payload Presence

Payload Analysis

Analytics

Measure and break down your page weight by scripts, stylesheets, and media.

Source Ownership

JavaScript Execution

Deep Dive

Find long-running tasks and scripts that block main thread responsiveness.

Visual Stability

Visual Stability (CLS)

Strategy

Track exactly which DOM elements are shifting during page load.

TTFB Analyzer

Server Response Time

Insights

Measure TTFB and discover backend delays holding your frontend back.

Image Optimization

Image Opportunities

Opportunity

Highlight oversized images and formats that need next-gen conversion.

Speed Benchmark

Competitive Benchmarking

Competitive

Compare your load times against your top competitors in real-time.

Export Reports

Export Developer Audits

Reporting

Download comprehensive technical CSV reports for your engineering team.

Analyze Speed in 3 Steps

Find exact performance bottlenecks without manual dev tools.

1
Enter URL

Enter Your URL

Provide the page URL you want to test. Our engine fetches elements just like a real mobile or desktop browser.

2
Run Audit

Run the Audit

We analyze CSS payloads, script execution time, image optimization, TTFB, and layout shifts automatically.

3
Execute Fixes

Execute Fixes

Receive a developer-ready report outlining exact scripts to defer, images to compress, and CSS to inline.

Core Web Vitals

Core Web Vitals Diagnostics

We identify specific DOM elements causing layout shifts, pinpoint exactly which script causes long tasks, and precisely calculate elements contributing to Largest Contentful Paint.

Waterfall Chart

Network Waterfall Analysis

Visualize exactly how assets load sequentially. Identify render-blocking bottlenecks, track heavy uncompressed media, and see exactly when DOMContentLoaded fires compared to full paint.

Mobile Emulation

Real Device Emulation

See how your page performs on constrained mobile networks automatically. We analyze using simulated 3G/4G connections and throttled CPUs to replicate true user environments.

Success Stories

How developers are saving milliseconds with PageSpeed Pro

"PageSpeed Pro showed us exactly which third-party scripts were blocking our main thread. We deferred them and dropped our LCP from 4.2s to 1.8s."

User
James Mitchell Lead Frontend Engineer, TechCorp

"The payload analysis is incredible. We discovered our images weren't properly compressed in next-gen formats. Converting them saved us 2MB per page load."

User
Sarah Johnson Performance Lead, E-CommerceHub

"We use PageSpeed Pro for all our client audits. The granular breakdown of layout shifts (CLS) makes it trivial to stabilize the UI."

User
Michael Chen Founder, SpeedOptimize Agency

"The visual stability tracking warned us about ad injection shifts. We defined container sizes and eliminated our CLS penalty instantly."

User
Emily Rodriguez Freelance Web Consultant

"TTFB insights revealed our database queries were holding back our initial response. A quick caching layer fix drastically improved load times."

User
David Park Backend Engineer, StartupX

"Seeing how we compare to competitors' load times pushed our team. We now ship smaller bundles and consistently out-load our top 3 rivals."

User
Lisa Thompson VP Product, SaaS Platform

Why Choose PageSpeed Pro

Actionable diagnostics that go beyond generic speed scores.

Core Web Vitals Focus

Stop guessing. Identify exact elements impacting Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift.

DOM & Script Profiling

Find long tasks blocking the main thread, excessive DOM depths, and overly complex CSS selectors that slow rendering algorithms.

Real Chrome Emulation

Audits run via headless Chrome instance simulating proper viewport, user agents, and constrained network/CPU profiles.

Historical Diagnostics

Track your score over time and correlate drops in performance with your recent deployments or dependency upgrades.

Regression Alerts

Receive immediate alerts to webhooks or Slack when a new code release increases your load average beyond a threshold.

Actionable Directives

Receive clear "to-do" lists like "defer script X", "compress image Y", and "inline CSS block Z" rather than vague metrics.

Who Needs PageSpeed Pro?

Performance matters for conversions, rankings, and user retention.

Frontend Developers

Pinpoint exactly which React component, unoptimized image bundle, or third-party ad script is locking up the browser thread.

  • Debug long JavaScript tasks
  • Optimize Critical Render Path
  • Resolve dependency bloat

E-Commerce Brands

Every second delay costs conversion. Optimize heavy category pages, product galleries, and checkout flows to ensure seamless buying.

  • Improve checkout fluidity
  • Optimize hero image loading
  • Lazy-load offscreen products

SEO Professionals

Core Web Vitals are a direct ranking factor. Ensure technical hurdles aren't preventing your high-quality content from ranking #1.

  • Pass Core Web vitals
  • Identify server response latency
  • Generate technical audit reports

DevOps Engineers

Understand how infrastructure response times (TTFB) and CDN cache hit rates influence end-user experienced load speeds globally.

  • Measure Time to First Byte
  • Verify CDN asset delivery
  • Locate network bottlenecks

Frequently Asked Questions

Understanding Page Speed & Core Web Vitals

What is a Page Speed Analyzer?

A Page Speed Analyzer is a diagnostic tool that measures how quickly your website's elements load in a browser. It dissects the network waterfall, execution time, and render path to pinpoint bottlenecks preventing your site from feeling entirely instant.

What are Core Web Vitals?

Core Web Vitals are specific factors Google considers important in a webpage's overall user experience. They primarily consist of Largest Contentful Paint (LCP, regarding loading performance), Interaction to Next Paint (INP, regarding responsiveness), and Cumulative Layout Shift (CLS, regarding visual stability).

How does page speed affect SEO?

Page speed is a confirmed ranking factor for both mobile and desktop searches. Sites that pass Core Web Vitals assessments receive a slight ranking boost, while very slow sites may be penalized in search results.

What is "render-blocking" CSS/JS?

Render-blocking resources are scripts and stylesheets that must be downloaded, parsed, and executed before the browser can render anything to the screen. To fix this, you should inline critical CSS and defer non-critical Javascript execution.

How can I fix a poor Largest Contentful Paint (LCP) score?

A poor LCP usually happens because the largest element (often a hero image or text block) loads slowly. You can fix this by compressing images, ensuring your server responds quickly (TTFB), using a CDN, and preventing render-blocking CSS/JS from delaying the render.

How often should I run audits?

You should run automated audits whenever pushing new code to a staging environment (using CI/CD pipelines). Additionally, reviewing overall site performance monthly ensures creeping unoptimized imagery or large script dependencies don't slowly negatively impact your Core Web Vitals.

Ready to Accelerate Your Pages?

Start your free Page Speed analysis now and eliminate those long load times.