WordPress Site Performance Optimization

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Entrust your WordPress site to experts in web performance

Do you want to improve the performance of your WordPress site to perform better on Google and with your users?

Get a quote in 24 hours

We don't just install a plugin and tick a few boxes: we bring your WordPress back to life!

< Our web performance experts optimize your WordPress site to meet the highest standards />

Fast Production Deployment

According to your internal processes, our experts operate directly in production for an instant performance gain, or on your pre-production environment. In either case, the deployment of our fixes occurs without any service interruption. The user experience remains perfectly fluid, and your employees' work is never impacted during our intervention.

The WordPress administration interface

Sustainable in the long term

To guarantee the stability of your platform, our developments are integrated as custom extensions and a child theme. We rely exclusively on the core and native APIs of WordPress, thus ensuring clean and standardized code. This approach allows you to update your theme and plugins with complete peace of mind, without altering our optimizations. We design our solutions to last.

Full Transparency

Every modification made is carefully recorded in a deliverable. We explain the gains brought by this modification in terms of performance metrics and how it was implemented. This allows your technical teams to understand and keep a record of what has been done. This documentation is not only provided at the end of the intervention but also presented via video conference to technical and business stakeholders.

Premium Support

Of the 308 clients supported by Agence Web Performance since 2022, a majority have been on WordPress. Our expertise is sharp and our intervention methodology is perfectly honed. Our developers also actively contribute to the core of WordPress and the organization of WordCamps. Contact us now to learn more about the potential performance gains of your WordPress installation.

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Improve Google and visitor trust: focus on Core Web Vitals

Our web performance optimizations have a direct impact on your visitors' experience, ensuring an increase in conversion volume and a decrease in bounce rates. User data being that collected by Google via its Chrome User Experience Report (the famous CrUX), it also has a direct impact on SEO (increased visibility in SERPs).

Our WordPress and WooCommerce optimizations meet Google's expectations for Core Web Vitals: we work on the CLS, LCP, and INP metrics. The impact on scores obtained in tools like PageSpeed Insights, Lighthouse, and GTmetrix is immediate (on mobile as well as desktop). The gains are reflected in the Search Console through the Page Experience and Core Web Vitals sections. A big plus for natural referencing, therefore!

A satisfied user of her mobile browsing experience

A service in 4 key steps

Our WordPress optimizations are broken down into several key stages.

A videoconference call as part of a service

Technical Alignment

01

Our specialists consult with your technical teams to deepen their understanding of your WordPress site: exploring its history, analyzing installed plugins, identifying performance issues already detected, and the actions taken to resolve them. This interaction is crucial to ensure the effectiveness of our intervention.

Tracking Implementation

02

We place a tag on your site that collects performance data from your real users. This "RUM" data is used to precisely identify bottlenecks. Thanks to this data-driven approach, we operate with maximum visibility on your issues.

We deploy Lighthouse monitors on your key pages to provide you with a synthetic view of performance evolution. Launched every 8 hours, they allow us to put numbers on mobile and desktop gains. Practical for those who track Core Web Vitals metrics in a tool like PageSpeed Insights.

WordPress Optimization

03

The expertise of our web performance specialists revolves around a methodical and precise audit of your WordPress site, using specialized tools to identify technical shortcomings. We then address these weaknesses by modifying the behaviors of the WordPress core, theme, and problematic plugins. This approach is the very essence of our know-how.

Intervention Report

04

We organize a debriefing session with your teams to share the results. During this meeting, we explain in detail the changes made and offer strategic recommendations to strengthen their web performance skills. This allows your developers and business teams to clarify all their questions with targeted and precise answers.

Our clients speak for us

Who better than a client to act as an ambassador and help you understand what Agence Web Performance can do for you?

Agence Web Performance is a gem of a provider! The project I entrusted them with went smoothly. The deliverable was of impeccable quality, and their service far exceeded my expectations. The team is attentive, while also being proactive. Will I use them again? Yes, for sure. Do I recommend them? Yes, without any hesitation.

Matthieu Tran-Van, Google Ads Expert

308

clients supported

100%

customer satisfaction

They entrusted us with their WordPress optimization

Liberlo Fine Arts Praxedo Costomise Makiba Hello New York IRSS Betterway Papercraft 3D Hyperlex Webmarketing&co'm Lock Academy

Why is a WordPress site slow ?

WordPress is not inherently slow: it becomes slow through accumulation. Six causes are common to almost all the sites we audit: shared hosting, a page builder, an excess of plugins, unoptimized images, lack of caching, and a database that is never maintained. None are visible in isolation; it is their accumulation that weighs it down.

Hosting comes first. On shared hosting, processor and memory resources are shared among hundreds of accounts: your response time depends on your neighbors' traffic, with no way for you to control it. Added to this are a sometimes outdated PHP version, poorly sized OPcache, and a database left at its factory settings.

Next come page builders. They produce deeper markup than necessary and load their own stylesheets and scripts on every page, even where none of their components are used. The cost is incurred on all pages of the site, even when the layout only justifies it on a few.

The third area is invisible from the browser: background tasks. Systematic logging of 404 errors, periodic checking of all links, recurrent analysis of the file structure by a security plugin: these processes occupy the server while your visitors wait, and accumulate without anyone having planned them together.

The good news is that these causes can be prioritized and addressed in order. Page caching and hosting change the order of magnitude; plugins and images are handled next; the database is cleaned last. Starting with the front-end is the most common mistake, as the gains are measurable but marginal as long as the server is struggling.

Have a question?
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Consult the FAQ for details about the service.

Why entrust your WordPress to Agence Web Performance?

Agence Web Performance is very active within the WordPress ecosystem. It sponsors WordCamp events, and its developers volunteer in the life of the CMS:

Amine: WordCamp Organizer

Eroan: Core Contributor, Translation Contributor, Translation Editor, WordCamp Organizer, WordCamp Speaker

Why optimize WordPress?

Optimizing your WordPress or WooCommerce site allows you to solve concrete problems with your site, those that impact your loading times, and therefore user experience and SEO visibility. It is the easiest way to quickly and lastingly correct the weaknesses of your theme and plugins.

I use Elementor, Divi, or a page builder, is that a problem?

No, quite the opposite! A majority of slow WordPress sites use Page Builders, and we have developed optimization tools that specifically target them. The results are particularly excellent with Elementor and Divi, which are very popular. But we also optimize sites built with WPBakery, Visual Composer, tagDiv Composer, Brizy, and Oxygen Builder.

Should we prioritize optimization or an audit?

Our extensive experience with the WordPress CMS allows us to implement performance fixes quickly and transparently. This is why we strongly recommend optimization by us rather than an audit followed by implementation by your own development teams. Since the cost of the 2 packages is the same, the return on investment is faster this way.

Do our optimizations have an environmental impact?

Yes! Optimizing the web performance of a WordPress site helps to decarbonize it, that is to say, to reduce its carbon footprint. Our services therefore perfectly meet the requirements of a website decarbonization brief. We also systematically include a " ecological impact " section in our deliverables.

How much does WordPress site optimization cost?

WordPress optimization costs between €1,500 and €3,500 excluding tax, depending on the number of templates, the plugins in place, and whether a page builder is used. This is a fixed-price package, including three to four days of analysis and patch deployment. We will provide a quote upon request.

How to speed up a WordPress site?

Proceed in order of impact: activate page caching, ensure hosting is not shared, update PHP with correctly sized OPcache, then address images and plugins. The first two levers change the order of magnitude; the following ones refine.

Page caching is the most cost-effective measure: it saves the final HTML and serves it again without re-executing WordPress or querying the database. A page that used to take hundreds of milliseconds now takes a few. It only covers anonymous visitors: for administration and logged-in users, object caching takes over.

Next comes what cannot be fixed with a plugin: lightening the markup produced by the page builder, prioritizing the above-the-fold image, deferring third-party scripts, and purging unnecessary background tasks. These measures require technical intervention, but they are the ones that last over time.

Which plugins slow down WordPress?

It's not the number of plugins that matters, but what they do. Four categories weigh heavily: page builders, security plugins that scan the file tree, those that log every 404 error or redirect, and link checkers that continuously recrawl the site. They all work in the background, out of sight.

The mechanism is always the same: a database write or a disk read on the critical path of the request. A site that logs its 404s performs a database insert for every visit to a non-existent page, including bots. The volume increases without real traffic growing, and the affected table eventually slows down all requests.

The good news is that these behaviors are almost always default settings, adjustable in each plugin's interface: reduce log retention, space out scans, enable low-resource mode. Uninstalling is not always necessary; it's the original configuration that's the problem, rarely the tool itself.