My website is slow: what can I do?

Don’t trust your desktop computer: test on a phone, on 4G, like your visitors. Then measure:

• Tramevia’s “Check your website” tool checks page weight, response time and SEO basics in a few seconds;
• PageSpeed Insights, Google’s free tool, measures the Core Web Vitals.

Google’s thresholds for a good experience: the main content shown (LCP) in under 2.5 seconds, a response to interactions (INP) in under 200 milliseconds, and a layout shift (CLS) below 0.1.

• Images that are too heavy: a 4 MB photo shown 400 pixels wide.
• Too many third-party scripts: chat window, carousel, tracking tools, social widgets.
• Too many plugins on WordPress, some loaded on every page.
• Fonts: many of them, or loaded from several services.
• Slow hosting, or no cache and compression.

• Resize images and convert them to WebP or AVIF.
• Load images further down the page only when the visitor gets there.
• Remove plugins and scripts that are no longer used.
• Limit fonts to one or two families, hosted on your own site.
• Turn on caching and compression with your host.

Done in the right order, these fixes are often enough to make a site noticeably faster.

If the site is built on a heavy theme, if one fix breaks another, or if you lack the time, a written diagnosis saves time: it lists the issues by priority and says what is worth fixing.

At Tramevia, website fixes start at €149, with a free first look at the page concerned. Changes are made on a copy, checked on desktop and phone, then explained.