Browser Performance Profiler

Professional browser-based performance analysis tool that measures Core Web Vitals (LCP, FID, CLS), generates resource waterfalls, tracks memory usage, analyzes JavaScript execution, and provides Lighthouse-style scoring with actionable optimization recommendations. Works entirely in the browser without extensions.

Core Web Vitals Analysis Resource Waterfall Chart Memory Leak Detection JavaScript Profiling Lighthouse-Style Scoring

Get Started

Instant results
Privacy-focused
Mobile friendly

Analyze Any Website

Quick test:

Test Configuration

Core Web Vitals

LCP
Largest Contentful Paint
-
Waiting...
FID
First Input Delay
-
Waiting...
CLS
Cumulative Layout Shift
-
Waiting...

Performance Score

0
Performance
-
Speed
-
Accessibility
-
Best Practices
-
SEO

Page Information

Title

-

Load Time

-

Page Size

-

Requests

-

Resource Breakdown

Optimization Recommendations

Enter a URL and click analyze to get recommendations

Page Screenshot

Screenshot will appear here after analysis

Frequently Asked Questions

Explore More Resources

Latest Articles

Weather & Astronomy
Weather Data & Astronomical Tools: Connecting with Natural Phenomena

Explore comprehensive weather analysis and astronomical tracking tools for outdoor planning, health ...

Jun 10, 2025
109
Media Creation
Audio Visual & Media Creation: From Podcasts to Social Content

Master professional audio visual content creation with powerful browser-based tools. From podcast ed...

Jun 10, 2025
138
Accessibility
Accessibility & Inclusive Design: Building for Everyone

Master accessible web design with comprehensive tools for WCAG compliance, color accessibility, voic...

Jun 10, 2025
120
Document processing
File Management & Document Processing: PDF, OCR & Conversion Tools

Master file management and document processing with professional PDF, OCR, and conversion tools. Str...

Jun 9, 2025
114

Developer Resources

BugFixCode.com

Professional code debugging and development solutions for developers.

  • Code Review & Debugging
  • Performance Optimization
  • Best Practices Guide
  • Developer Tools
Trusted by developers worldwide