Google's 2025 Core Web Vitals update raised the bar. Here's what that means for Irish tourism sites and the specific fixes that recover lost bookings.
In May 2025 Google tightened its Core Web Vitals thresholds — the speed and stability scores it uses as a lightweight but real ranking factor. Most small tourism websites are now further behind the bar than they were a year ago, and most operators don't know it.
The effect is quiet: not a cliff, but a steady drift down the rankings, invisible unless you're tracking it. Here's what changed, why it matters for Irish tourism sites specifically, and the small set of fixes that make the difference.
Core Web Vitals measures three things:
The 2025 update:
What this means in practice: a site that scored "good" across the board in 2024 may now score "needs improvement" without changing a line of code.
Three compounding factors make this a tourism-specific problem:
Tourism websites live and die by visual impact. A typical tourism hero is a 1920×1080 JPEG at 400-800KB, often loaded at full quality on mobile, where it's rendered at 375×211. The rendering gap is wasted bandwidth, and the file size directly increases LCP on mobile.
Small operators commonly embed: a booking widget, Google Maps, a reviews widget, a social feed, a cookie banner, a live-chat widget. Each one adds JavaScript to the page — and each additional JS file compounds INP (and delays LCP).
Your visitors are disproportionately on mobile, often on rural networks or travelling on patchy data. Ireland's rural 4G coverage remains uneven — 3G fallback happens. The site that loads in 1.2 seconds on fibre in Dublin may take 8 seconds in the Gaeltacht.
The effect compounds: a visitor in rural Connemara, on 3G, loads a 3MB hero image on a site with five third-party widgets, and sees a white screen for 6 seconds. They close the tab. You never knew they existed.
Converting hero images from JPEG to WebP typically cuts file size by 30-50% with no visible quality loss. AVIF does even better but browser support is still catching up. Modern frameworks serve the right format per browser automatically; WordPress themes often don't.
If you are on WordPress, a plugin like ShortPixel or EWWW Image Optimizer configured properly (not default settings — configured) will cut your image payload dramatically. This is the single highest-ROI change for most tourism sites in 2026.
Images, videos, iframes, widgets — anything not visible on initial load should be deferred. Lazy-loading is a browser standard in 2026 (loading="lazy" attribute on images and iframes), but many older tourism sites don't use it.
A booking widget doesn't need to be running in the background on your homepage. It needs to be there when the user clicks "Book Now". A technique called facade loading replaces widgets with static previews that swap to the real widget on user interaction. Cuts INP measurably.
Audit your third-party scripts. Most tourism sites have 10-20 scripts loaded on every page, many of which were added for a single experiment and never removed. Every unused script is free latency.
Chrome DevTools' Coverage tab shows exactly which JS is used vs. loaded on each page. The gap is often startling.
Hosting matters more in 2026 than it did five years ago. A tourism site on shared WordPress hosting at €5/month is meaningfully slower than the same site on modern edge hosting — Vercel, Netlify, Cloudflare Pages, or a properly configured managed WordPress host like WP Engine or Kinsta.
The difference isn't nothing — it's commonly 1.5-3x faster, globally, with no other changes. For a tourism site serving international visitors on variable connections, this is exactly where the gap hurts most.
Three free tools, in order of usefulness:
Focus on PageSpeed Insights mobile score and the Core Web Vitals report in Search Console. Desktop scores are a distraction — your traffic isn't on desktop.
Aim for:
Hitting all three on mobile is achievable for a well-built small tourism site. It is difficult for a site built on an old theme with a long list of plugins layered in over five years.
The honest answer: if your site is on WordPress and more than four years old, it's almost always cheaper and better to rebuild than to patch. If it was built cleanly within the last two years on a modern framework (Next.js, Astro, Nuxt, SvelteKit), it's almost always worth patching.
The tipping point is usually how much content exists. A site with 50+ pages of valuable content is worth migrating carefully. A site with 8 pages and a booking widget is often faster to rebuild from scratch.
Every second of extra load time costs conversions. The 2025 research from Akamai and Google, specific to travel websites, put the cost at roughly 7-12% lost bookings per additional second of LCP on mobile. For a small operator doing €500k in direct bookings per year, a 2-second slower site is plausibly worth €70k-€120k in lost revenue annually.
That is the real number behind a Core Web Vitals "needs improvement" score.
Want us to run the numbers on your site's mobile performance and tell you the three changes that would move the needle most? Book a free call.