Core Web Vitals
speeding up your site
LCP, INP and CLS shape how fast your site feels and influence search rankings. Here are the optimisations that produce measurable gains, ranked by effort versus result.
Six worthwhile optimisations
From simplest to most technical, with the expected effect.
Modern images
WebP or AVIF formats, exact dimensions and lazy loading below the fold: often 40% less weight.
Caching and compression
Page caching, Brotli compression and minification cut TTFB and transferred volume.
Controlled fonts
Host fonts locally, limit the variants and preload the one used by your main heading.
Third-party scripts
Every external widget costs execution time. Load them after interaction or remove them.
Suitable hosting
A server with a recent PHP version, OPcache and Redis transforms response times.
Reserve the space
Declare width and height for images and ad slots to prevent layout shifts.
Optimisation method
Six steps to improve without breaking the site.
Record field and lab data on mobile for your three most visited pages.
Usually a hero image: that is where the priority effort goes.
Convert, resize, preload the main image and defer the rest.
Remove unused plugins and defer anything not critical to the first render.
Caching, up-to-date PHP, a slimmer database and a CDN for distant visitors.
Compare scores, then watch for drift every month and after each update.
Frequently asked questions
Speed, SEO and WordPress.
Does speed really affect rankings?
Yes, as one signal among many. Its clearest effect is indirect: a fast site loses fewer visitors and converts more.
Do I need a score of 100?
No. A mobile score above 90 with healthy field metrics is enough. Chasing the last few points usually costs more than it returns.
Why does my score change between tests?
Lab tests simulate a given network and device. Judge by field data aggregated over 28 days instead.
Do page builders slow a site down?
They add generic code. Well configured and paired with caching they remain acceptable; used carelessly they clearly hurt LCP.
Do I need a CDN?
Useful if your audience is geographically spread or you serve lots of media. For a purely local audience, hosting matters more.
How do I avoid regressions?
Check the metrics after every major update and refuse non-essential plugins.
A web project to move forward?
Describe your needs in a few lines: we reply within 48 working hours with concrete recommendations and a fixed quote if you want one.
Request a free quotecontact@websteve.fr
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