Web performance consultant for Prestashop
Optimize web performance on Prestashop stores
Prestashop powers a large share of French e-commerce. Its third-party modules and heavy hooks can kill Core Web Vitals if the stack isn't maintained. I work on modules, Smarty cache, MySQL queries and frontend to deliver a fast site.
They trust me
Prestashop symptoms calling for an audit
Prestashop mainly suffers from accumulation of unaudited modules and hooks.
🐌 Origin TTFB above 1 second
Without properly activated Smarty cache, without object cache (Memcached or Redis), and with 40 active modules, Prestashop TTFB easily exceeds 1 second. Complete backend optimization drops that TTFB below 300ms.
🧩 30+ modules installed without recent audit
Each module adds assets, hooks and SQL queries. Module-by-module audit typically identifies 5 to 10 modules to uninstall or refactor. TTFB gain is immediate.
🪝 Hooks running everywhere without condition
actionDispatcher, displayHeader, hookActionFrontControllerSetMedia: a module hooking broadly without conditions runs on every page. Prestashop profiling exposes the real cost, refactoring conditions the right hooks.
🖼️ Product images without next-gen formats or fetchpriority
Native Prestashop doesn't generate WebP or AVIF by default. Generation modules exist (TBWebP, Ph2 WebP) but need configuration. Prioritizing the LCP image via fetchpriority gains 200-500ms.
🔎 Slow search and categories with numerous attributes
The Prestashop faceted filtering system becomes costly with many attributes and features. Without MySQL index optimization and without cache fragments on listings, category TTFB drifts.
🍪 Cookie banners and third-party scripts killing INP
Axeptio, Tarteaucitron, Didomi: these consent solutions often block the main thread at load. Deferral and proper configuration (lazy load of conditional third-party scripts on consent) restore INP.
Prestashop optimization methodology
4 steps to transform your performance
1. Modules + hooks audit
Complete inventory of active modules, impact measurement via profiling. Identify modules to uninstall, refactor or replace.
2. Backend optimization
Activate Smarty cache (compilation + template cache), set up Memcached or Redis object cache, MySQL tuning on indexes, opcache + PHP 8.x JIT.
3. Frontend optimization
Defer non-critical scripts, image WebP/AVIF generation, fetchpriority on LCP image, current theme optimization.
4. CDN + monitoring
Set up CDN (Cloudflare, Akamai depending on context), calibrated Cache Rules. Install continuous Core Web Vitals monitoring (SpeedCurve, mPulse).
1. Modules + hooks audit
Complete inventory of active modules, impact measurement via profiling. Identify modules to uninstall, refactor or replace.
2. Backend optimization
Activate Smarty cache (compilation + template cache), set up Memcached or Redis object cache, MySQL tuning on indexes, opcache + PHP 8.x JIT.
3. Frontend optimization
Defer non-critical scripts, image WebP/AVIF generation, fetchpriority on LCP image, current theme optimization.
4. CDN + monitoring
Set up CDN (Cloudflare, Akamai depending on context), calibrated Cache Rules. Install continuous Core Web Vitals monitoring (SpeedCurve, mPulse).
Mission commitments
Frequently asked questions
Should I migrate to Prestashop 8.x for performance?
How many modules is too many?
Prestashop or WooCommerce for a French B2C store?
How are your Prestashop engagements structured?
Get your Prestashop Core Web Vitals green
Data 2023-2026
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 - Luxury brand
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
Prestashop, French e-commerce and modules debt
Prestashop powers a significant share of French mid-market e-commerce. Its flexibility through third-party modules is also its main source of technical debt: a typical Prestashop site accumulates 30 to 50 modules over the years, each adding hooks, assets and SQL queries. Without regular auditing, Core Web Vitals drift and origin TTFB climbs.
The e-commerce optimization angle on Prestashop is mostly remedial: module-by-module audit with impact measurement, heavy hooks rebuild, Smarty optimization and cache fragments, MySQL tuning, and frontal CDN. Version 1.7 remains most-deployed in France, 8.x brings significant performance improvements.
Third-party modules, lever number one
On a Prestashop mission, the modules audit almost always occupies the first phase. Each installed module can add assets (CSS, JS), hooks (running on every request), SQL queries, sometimes even heavy cron tasks. A poorly coded module or one abandoned by its vendor can alone add 500ms to TTFB.
The audit lists every module, measures its real impact (assets injected, hooks used, queries added) and arbitrates: keep, disable, replace or refactor. On past missions, the modules audit typically recovers 30 to 50% of origin TTFB.
Smarty, MySQL and frontend
Beyond modules, structural levers remain: properly activated Smarty cache (template compilation and caching), object cache via Memcached or Redis (since 1.7), MySQL tuning on indexes, and frontend optimization (defer JS, modern image formats, fetchpriority).
Moving to Prestashop 8.x also brings gains: architecture rebuild, PHP 8.x support with opcache and JIT, Core improvement. For sites on stable 1.7, migrating to 8.x is often a profitable webperf investment, provided you audit module compatibility first.
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