Contenu du cours
Module 1 — Why speed matters
Understand the impact of speed and learn how to measure it.
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The impact on SEO, UX and conversions
11:00
Measuring your site’s speed
12:00
The main causes of slowness
10:00
Quiz — Module 1
Module 2 — Optimising images and media
The most cost-effective optimisation: compression, formats and deferred loading.
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Compressing and choosing the right format
12:00
Lazy loading
10:00
Sizing your images correctly
10:00
Quiz — Module 2
Module 3 — Caching and technical optimisation
Caching, minification and CDN: going faster without writing code.
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Caching: the biggest win
12:00
Minification and bundling (CSS/JS)
11:00
The CDN: bringing content closer to the visitor
10:00
Quiz — Module 3
Module 4 — Hosting and maintenance
A solid foundation and regular upkeep for lasting performance.
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Choosing good hosting
11:00
Cleaning the database and trimming plugins
11:00
Tracking and maintaining performance
10:00
Quiz — Module 4
Speed Up Your WordPress Site

A CDN (content delivery network) stores copies of your files on servers spread around the world.

The benefit

Visitors download the files from the server that is geographically closest to them: loading is faster, especially for an international audience.

When to use one

Useful as soon as you have visitors far from your host, or a lot of images. Services such as Cloudflare offer a free plan.

Key takeaway: a CDN shortens the distance between your files and your visitors.

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