Web Performance Optimization
Optimize the web performance of your site
E-commerce store, corporate site, or media: enhance your UX to increase your conversion rate with a web performance consultant integrated into your teams.
Optimization Checklist
Actions identified during the audit
applied
Some figures
The keys to web performance optimization
Optimizing web performance has a direct impact on conversion rates. With a fast site, you will increase the chances that your visitors convert into customers.
🔍 Web performance audit
The audit is the first necessary step for optimization. By identifying the elements that slow down navigation, it is possible to act effectively.
⚡ Performance optimization
I work directly on the web performance optimization of your site, or I integrate with your teams to help them implement and verify the recommendations.
📈 Web performance and SEO
Google introduced Core Web Vitals in 2020 and gives a slight boost to the highest-performing pages. A fast site is better positioned in search results.
Instant measurable impacts
TTFB
LCP
CLS
Score
How does optimization work?
A structured support for measurable results
Action plan
Development of a prioritized roadmap based on impact and implementation difficulty.
Implementation
Direct optimization or support for your teams to integrate the recommendations.
Verification
Performance tests before/after to validate each optimization implemented.
Action plan
Development of a prioritized roadmap based on impact and implementation difficulty.
Implementation
Direct optimization or support for your teams to integrate the recommendations.
Verification
Performance tests before/after to validate each optimization implemented.
Results observed with my clients
I work on all CMS and technologies
No matter your tech stack, I have the expertise to optimize your site.
Guaranteed measurable results
If the optimizations made do not improve your Core Web Vitals within 30 days, I will redo the work for free until the set goals are achieved.
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
Need something else?
Complete audit of your site's web performance: identification of bottlenecks, analysis of Core Web Vitals, and prioritized recommendations.
Continuous monitoring of web performance: tracking Core Web Vitals, real-time alerts, and regression detection.
Support for reducing the carbon footprint of your website: eco-design, page weight optimization, and responsible hosting.
Frequently asked questions
Why optimize web performance?
What technologies do you work with?
What is the difference between audit and optimization?
How long does optimization take?
Ready to accelerate your site?
Webperf and User Experience
Web performance is a fundamental pillar of user experience. A slow site generates frustration, increases the bounce rate, and harms your brand's perception. Studies show that 40% of users leave a site that takes more than 3 seconds to load, and 47% of consumers expect a load time of less than 2 seconds.
Optimizing perceived performance — the time felt by the user — is just as important as actual performance. Techniques like lazy loading, prefetching, and optimizing the Critical Rendering Path provide a sense of speed even on content-rich pages.
Webperf and Conversion Rate
The correlation between performance and conversion has been documented for years. According to Kissmetrics, 79% of buyers dissatisfied with a site's performance do not return. Amazon has demonstrated that an additional second of latency can cost $1.6 billion in annual revenue.
For an e-commerce site, every millisecond counts: optimizing the loading time of product pages, the checkout process, and category pages has a direct and measurable impact on average cart value and conversion rate.
Resilience and Carbon Footprint
A high-performing site is also a more resilient and sustainable site. By reducing page weight and the number of server requests, you decrease the energy consumption of your infrastructure and your users. An optimized site better withstands traffic spikes and offers a stable experience even on degraded connections.
How to Improve Web Performance
Web performance optimization works on two complementary fronts. On the front-end: optimizing images, minifying CSS and JavaScript, implementing lazy loading, configuring browser caching, and reducing the Critical Rendering Path. On the back-end: optimizing database queries, server caching, CDN configuration, and compressing HTTP responses.
My approach involves integrating directly with your technical, marketing, and design teams to ensure that each optimization is implemented correctly and sustainably, without compromising existing functionalities.
Monitoring Web Performance
Optimization is not a one-time event but a continuous process. Every new feature, content update, or addition of third-party scripts can degrade performance. Regular monitoring of Core Web Vitals (LCP, INP, CLS) allows for detecting regressions before they impact your users and your revenue.