Site Speed

Site Speed is a free tool that lets you look up real-user performance data for any website using the Chrome UX Report (CrUX). No account required — enter a domain or URL and see results instantly.

Use it to check your own site, benchmark competitors, or verify that a recent deploy actually improved performance for real users.

Look up a site

Type a domain (e.g., example.com) or a full URL (e.g., https://example.com/pricing) into the search bar.

If the site has enough Chrome traffic, you'll see a full performance report. If not, you'll see a "No CrUX Data" message — this means Google doesn't have enough data to include it in the Chrome UX Report.

Tip: CrUX data is available for most sites with regular traffic. Smaller or newer sites may not be included yet.

Read the site report

The report gives you a complete picture of how real users experience a domain.

Site Speed report showing Core Web Vitals trends and geographic heatmap

Core Web Vitals

The main section shows five key metrics over time:

TTFB (Time to First Byte) — how quickly the server responds.
FCP (First Contentful Paint) — when the first content appears on screen.
LCP (Largest Contentful Paint) — when the main content finishes loading. Aim for under 2.5s.
INP (Interaction to Next Paint) — how responsive the page is to user input. Aim for under 200ms.
CLS (Cumulative Layout Shift) — how much the layout shifts during loading. Aim for under 0.1.

Each metric shows a p75 value — the 75th percentile, meaning 75% of visits are faster than this number. This is the threshold Google uses for Core Web Vitals assessment.

The bar chart shows how this value has changed over time. Each bar represents a 28-day collection period. Switch between value mode (p75 numbers) and distribution mode (percentage of fast/needs-improvement/slow visits) using the toggle above the charts.

Audience breakdown

Understand who your visitors are and how they connect:

Form factors — what share of users are on phone, desktop, or tablet. Performance often varies significantly between devices.
Round-trip time — network latency your users experience. High RTT can indicate a geographically distant user base.
Navigation types — how users arrive: direct navigation, back/forward, cached visits, reload, or prerender.

Geographic heatmap

See how your site performs around the world. The map is color-coded by performance category — green (fast), yellow (needs improvement), red (slow). Hover over any country to see exact metrics.

This is especially useful for identifying regions where your CDN or server infrastructure may need improvement.

Filters

Narrow down the data to focus on what matters:

Device — compare phone vs desktop performance.
Country — check performance in specific markets.
Time interval — view up to 1 year of history (longer intervals available on paid plans).

Drill into a specific URL

Click on any tracked URL to open a dedicated report scoped to that single page.

URL-level report with metric trends and LCP subparts breakdown

The URL report includes the same metrics as the site report, plus:

Site-level comparison — overlay the domain average to spot pages that underperform.
LCP subparts — see exactly where LCP time is spent: server response, resource load delay, download time, and render delay.

Save sites to your dashboard

Create a free account to save up to 5 domains and track them over time from a personal dashboard.

My Sites dashboard showing saved domains with CrUX metrics

Saved sites let you:

Track CrUX metrics over time without re-searching.
Compare multiple domains side by side.
Sort by any metric to find what needs attention.

Add URLs to a saved site

For each site, choose how to discover pages:

Manual — enter specific URLs you want to track (up to 10 on the free plan).
Dynamic — provide a URL prefix (e.g., /blog/) and let Treo discover popular pages automatically.
Sitemap — provide a sitemap URL for automatic discovery.

Scan URLs Lite

When you choose the Dynamic option, Treo uses Scan URLs Lite to crawl your site and find pages that have CrUX data. Discovered pages appear in your site report's URL table.

The free plan includes 10 lifetime scans. Each scan counts once when triggered, regardless of how many pages it discovers. You can copy discovered URLs into a manual list for more control over what you track.

Free plan limits

| Feature | Free plan | | --- | --- | | Saved sites | 5 | | URLs per site | 10 | | CrUX history | 1 year | | Scan URLs Lite | 10 lifetime scans | | Lighthouse audits | Not included |

Need more sites, URLs, longer history, or Lighthouse monitoring? See pricing or learn about Sites and Pages.