17 tools in Page Speed

C

Chrome UX Report (CrUX)

★★★★½ 4.5
Free

A public dataset of real-world performance data collected from actual Chrome users, covering millions of websites and powering the field data you see in PageSpeed Insights and Search Console.

Real-user performance data from Chrome users Core Web Vitals metrics (LCP, INP, CLS) Breakdown by device, connection type, and form factor BigQuery access for raw data queries
R

RequestMetrics

★★★★☆ 4.4
Paid

A straightforward real-user monitoring tool that shows you where your site feels slow for actual visitors, with performance data broken down by page type, geography, and device.

Real-user monitoring from actual site visitors Core Web Vitals tracking (LCP, INP, CLS) Breakdown by page type, geography, and device Time to First Byte and First Contentful Paint data
P

PurgeCSS

★★★★☆ 4.4
Free

An open-source tool that analyses your HTML and removes CSS rules that are never used on your site, reducing stylesheet file size and eliminating a common cause of slow page load times.

Removes unused CSS selectors automatically Integrates with webpack, Rollup, Gulp, PostCSS Safelist for protecting dynamically added classes Custom content source configuration
T

Treo Site Speed

★★★★☆ 4.3
Freemium

Provides a clean visual dashboard of your Chrome UX Report data so you can track your Core Web Vitals history, compare yourself against industry peers, and monitor performance trends over time.

Visual dashboard of Chrome UX Report (CrUX) data Core Web Vitals history and trends Competitive benchmarking against industry peers Origin-level and URL-level data
Y

Yellow Lab Tools

★★★★☆ 4.3
Free

A free code quality analyser that detects problematic JavaScript patterns and overly complex CSS that slow down browser rendering, going beyond simple file size to examine code quality issues.

JavaScript code quality and pattern analysis CSS complexity and selector performance scoring DOM structure and node count analysis Duplicate code detection