Web Performance Monitoring
Keep Control Over Your Site's Performance
Detect regressions before your users do with continuous monitoring of your Core Web Vitals and performance metrics.
Overall score
Google PageSpeed Insights
PoorWhy monitor performance
Monitoring tailored for performance
Every deployment, every addition of content or script can degrade your site. Monitoring turns performance into a reliable and actionable indicator.
📊 Core Web Vitals Tracking
LCP, INP, CLS: your key metrics are continuously monitored with real user data (RUM) and synthetic data for a complete view.
🚨 Regression Alerts
Receive an alert as soon as a metric exceeds a critical threshold. Detect regressions in minutes, not days.
📈 Custom Dashboards
Clear dashboards for your technical and decision-making teams: metric evolution, performance/conversion correlation, performance budgets.
🔄 CI/CD Integration
Monitoring integrates into your deployment pipeline to automatically block releases that degrade performance.
Your metrics in real time
TTFB
LCP
CLS
Score
How is monitoring set up?
An operational setup in a few days
Probe Configuration
Setting up synthetic monitoring and Real User Monitoring (RUM) on your strategic pages.
Alerts and Thresholds
Defining alert thresholds by metric and by page, with notification via email, Slack, or webhook.
Dashboards and Reporting
Creating dashboards tailored to your teams: technical, marketing, and management.
Probe Configuration
Setting up synthetic monitoring and Real User Monitoring (RUM) on your strategic pages.
Alerts and Thresholds
Defining alert thresholds by metric and by page, with notification via email, Slack, or webhook.
Dashboards and Reporting
Creating dashboards tailored to your teams: technical, marketing, and management.
Compatible with all technologies
Monitoring adapts to your stack: WordPress, Shopify, React, Next.js, Laravel, or any other technology.
Detection guaranteed within 24 hours
Any significant regression of your Core Web Vitals is detected and reported within a maximum of 24 hours. If a degradation goes unnoticed, I intervene at no additional cost.
What my clients say
Excellent work.
Paul has significantly improved the site's speed and perfectly aligned it with Google's recommendations.
Professional, thorough, and efficient, I highly recommend.
Nicolas - April Moto
Digital & E-commerce Director
We are very satisfied with Paul's work. He is quick, available, and particularly effective. Since his arrival, very good results have been observed, both in terms of performance and responsiveness. A real asset for our team.
Léo - Maison de luxe
E-commerce Product Owner
I don't know if we've said it enough.
But if you want to improve your loading speed,
Make Google happy and get your Core Web Vitals in the green,
Contact Paul Delcloy.
Florian Darroman - Les Makers
Co-founder
Complementary services
Complete audit of your site's web performance: identification of bottlenecks, analysis of Core Web Vitals, and prioritized recommendations.
Support for optimizing the speed and user experience of your website, e-commerce, or corporate site.
Frequently Asked Questions
What is the difference between synthetic monitoring and RUM?
What metrics are tracked?
Is it necessary to have an audit before setting up monitoring?
Does monitoring slow down my site?
Ready to monitor your performance?
Why Web Performance Monitoring is Essential
A website is never performant once and for all. Every new deployment, every content addition, every plugin update, or third-party script integration can silently degrade your site's speed. Without monitoring, these regressions go unnoticed for days or even weeks, until the impact is felt on your conversions and SEO.
Web performance monitoring transforms an invisible indicator into actionable data. It provides continuous visibility into the health of your site and allows you to intervene before degradations reach your users.
Core Web Vitals: The Metrics That Matter
Google has made Core Web Vitals an official ranking factor. LCP (Largest Contentful Paint) measures display speed, INP (Interaction to Next Paint) measures responsiveness to interactions, and CLS (Cumulative Layout Shift) measures visual stability. These three metrics directly reflect the experience of your visitors.
Continuous tracking of these indicators, combined with real-world data (Real User Monitoring), allows you to distinguish normal variations from true regressions and correlate performance with your business KPIs: conversion rate, bounce rate, average cart value.
Regression Detection and Prevention
The majority of performance regressions are not isolated incidents but progressive degradations. A marketing script added here, an unoptimized image there, a third-party widget updated: these small changes accumulate and ultimately weigh on the user experience. A calibrated alert system detects these drifts as soon as they appear.
Integrating monitoring into your CI/CD pipeline goes further: each deployment is automatically evaluated in terms of performance, and production releases that degrade metrics beyond defined thresholds can be blocked before reaching your users.
A Cost-Effective Long-Term Investment
The cost of an undetected regression far exceeds the cost of monitoring. An additional second of LCP can reduce your conversion rate by 7%. On a high-traffic site, this represents tens of thousands of euros in lost revenue per month. Monitoring helps protect the gains achieved during optimization and maintain a stable level of performance over time.