Analyze Web
Performance
Enter any URL to find what's slowing it down — blocking scripts, heavy bundles, unoptimized assets, and Core Web Vitals issues.
Tools
View all 13 toolsFIELD DATA
2/2LAB ANALYSIS
3/3Automated Lighthouse Audits
Full Lighthouse audit with performance, accessibility, best practices, and SEO scores.
Execution Profiler
Deep-dive into main thread activity. Diagnose long tasks, JavaScript execution times, and layout shifts.
Stack Inspection
Identify underlying technologies, frameworks, and CMS platforms to understand their impact on total page weight.
SERVER ANALYSIS
1/5Page Weight Analyzer
Measure the resource weight of any page — JS, CSS, images, and fonts with per-file breakdown.
HTTP Header Audit
Analyze caching, compression, CDN, and security headers for performance issues.
Redirect Profiler
Trace the full redirect chain with per-hop timing and protocol analysis.
Image Analyzer
Detect oversized, unoptimized, and improperly loaded images with fix suggestions.
Third-Party Impact
Classify and measure the performance cost of every third-party script.
MONITORING
0/3Performance Budgets
Set metric thresholds and track field data against your budgets over time.
Regression Detector
Automatically detect statistically significant regressions in CrUX trends.
Scheduled Audits
Run recurring analysis on your URLs with historical tracking and alerts.