---
description: Track real user metrics and identify performance issues.
title: Monitor performance
image: https://developers.cloudflare.com/og-docs.png
---

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> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/use-cases/llms.txt  
> Use this file to discover all available pages before exploring further.

# Monitor performance

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://mchen-ai-models-sync.previews.developers.cloudflare.com/use-cases/performance/monitoring/index.md)|[Agent setup](https://mchen-ai-models-sync.previews.developers.cloudflare.com/agent-setup/)

Understanding how real visitors experience your site requires metrics from actual sessions, not synthetic tests. Cloudflare Web Analytics collects Core Web Vitals and performance data from 100% of page views without cookies or sampling.

## Solutions

### Web Analytics

Privacy-first, cookie-free analytics for websites. [Learn more about Web Analytics](https://mchen-ai-models-sync.previews.developers.cloudflare.com/web-analytics/).

* **Real user metrics** \- Performance data collected from actual visitor sessions, not synthetic tests
* **Core Web Vitals** \- Track Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) scores across your real user base
* **No sampling** \- 100% of page views are measured without cookies, consent banners, or data sampling

### Observatory

Run performance tests and get optimization recommendations. [Learn more about Observatory](https://mchen-ai-models-sync.previews.developers.cloudflare.com/speed/observatory/).

* **Performance testing** \- Run on-demand speed tests and receive prioritized optimization recommendations

## Get started

1. [Enable Web Analytics](https://mchen-ai-models-sync.previews.developers.cloudflare.com/web-analytics/get-started/)
2. [Run a speed test](https://mchen-ai-models-sync.previews.developers.cloudflare.com/speed/observatory/)

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## On this page

[![](https://mchen-ai-models-sync.previews.developers.cloudflare.com/_astro/logo.te5VL_aD.svg)Docs](https://mchen-ai-models-sync.previews.developers.cloudflare.com/)

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