# Our best PrestaShop modules to speed up your store

> WebP and AVIF image optimisation, real-world Core Web Vitals measurement, automatic cache purge and LCP-optimised homepage banners: the selection for speeding up your PrestaShop 8 & 9 shop, for conversion rather than the score.

- Page: <https://www.datafirefly.com/en/solutions/prestashop/performance-speed/>
- Language: en
- Last updated: 2026-09-23
- Other languages: [fr](https://www.datafirefly.com/solutions/prestashop/performance-vitesse/index.md), [de](https://www.datafirefly.com/de/solutions/prestashop/performance-geschwindigkeit/index.md), [es](https://www.datafirefly.com/es/solutions/prestashop/rendimiento-velocidad/index.md), [it](https://www.datafirefly.com/it/solutions/prestashop/performance-velocita/index.md), [pl](https://www.datafirefly.com/pl/solutions/prestashop/wydajnosc-i-szybkosc/index.md), [nl](https://www.datafirefly.com/nl/solutions/prestashop/performance-snelheid/index.md), [pt](https://www.datafirefly.com/pt/solutions/prestashop/desempenho-velocidade/index.md)
- Index: <https://www.datafirefly.com/en/solutions/llms.txt>

## Speed is not an SEO issue — it is a conversion issue

People sell you performance as a ranking factor. It is one — but a _weak_ one. A slow store with excellent content regularly beats a lightning-fast one with nothing to say.

Where speed actually decides things is **in your customer's cart**. A visitor waiting for a page does not wait: they leave. And they will not tell you — they simply never appear in your figures.

## The culprit is almost always the same

Not your hosting. Not PrestaShop. **Your images.** On a typical e-commerce page, images account for by far the largest share of the weight — and most stores serve them as 2010-era JPEGs, at full resolution, with no lazy loading.

## And you cannot optimise what you do not measure

A score in a testing tool is a laboratory measurement. What counts is the _real_ numbers from your real visitors, on their real devices, on their real network. The rest is decoration.

## Further reading

Three in-depth guides from the blog complete this selection: [the complete Core Web Vitals guide](https://www.datafirefly.com/en/2026/05/01/core-web-vitals-prestashop-wordpress-guide-2026/), [the LCP, INP, CLS technical checklist](https://www.datafirefly.com/en/2026/05/09/prestashop-8-performance-core-web-vitals-checklist-2026-lcp-inp-cls/) and [cache, Critical CSS and next-gen images](https://www.datafirefly.com/en/2026/06/15/core-web-vitals-2026-optimize-prestashop-cache-critical-css-images/).