Case study
Adande Refrigeration (France)
adanderefrigeration.fr
Every image in the library re-encoded to AVIF, with WebP behind it and the untouched original behind that. No redesign, no rebuild, and nothing deleted.
less for a visitor to download, measured across 25 pages of the live site.
The heaviest page
Averages hide the page that actually
hurts. On adanderefrigeration.fr it is /, which went from
4.6 MB to 1013 KB —
78.6% lighter. That is the page a visitor on a phone was waiting for.
Page by page
Every page, weighed as a browser loads it
HTML, stylesheets, scripts and images together — not a lab score and not a
projection. Re-runnable at any time, because the page carries both halves of its own
comparison: the AVIF a modern browser takes, and the original still sitting in the
<img> fallback inside it.
| Page | Before | Now | Lighter |
|---|---|---|---|
| Home page | 4.6 MB | 1013 KB | 79% |
| Les tiroirs adande au crow wood hotel spa | 4.3 MB | 1022 KB | 77% |
| 404 2 | 3.9 MB | 890 KB | 78% |
| Consommation delectricite | 2.3 MB | 796 KB | 66% |
| Under counter two drawer side engine vcs2 series | 1.6 MB | 1.1 MB | 30% |
| Under counter two drawer rear engine vcr2 series | 1.6 MB | 1.1 MB | 30% |
| Under counter shallow two drawer side engine vls2 series | 1.6 MB | 1.1 MB | 30% |
| Under counter shallow one drawer side engine vls1 series | 1.6 MB | 1.1 MB | 30% |
| Under counter one drawer rear engine vcr1 | 1.6 MB | 1.1 MB | 30% |
| Under counter one drawer side engine vcs1 series | 1.6 MB | 1.1 MB | 30% |
| Produits | 1.6 MB | 1.3 MB | 20% |
| Viande glace poisson chocolat | 1.3 MB | 799 KB | 41% |
| Worktop upstands | 1.2 MB | 1015 KB | 16% |
| Des connexions cools | 1.1 MB | 775 KB | 34% |
| Notre technologie | 977 KB | 799 KB | 18% |
| Armoires a presentoirs ouverts pour points de vente dotees de la technologie aircell | 956 KB | 930 KB | 3% |
| Nos produits | 950 KB | 820 KB | 14% |
| Un peu plus chaud un peu plus froid | 894 KB | 803 KB | 10% |
| Quest ce qui explique la difference adande | 868 KB | 773 KB | 11% |
| Qui sommes nous | 853 KB | 792 KB | 7% |
| Parlons temperature | 803 KB | 764 KB | 5% |
| Merci | 786 KB | 744 KB | 5% |
| Adande plus de fonctions pour de plus grands resultats | 774 KB | 761 KB | 2% |
| Une plus grande capacite une plus petite empreinte | 774 KB | 759 KB | 2% |
| Contactez | 763 KB | 757 KB | 1% |
| Every page | 39.2 MB | 22.7 MB | 42.1% |
The images alone came down 89.7%. The whole-page figure is lower because every page also carries text, layout and code, which this work does not touch — and the whole page is what a visitor waits for, so that is the number quoted at the top. Four of these pages offer several image sizes and the browser picks one by screen width, so those rows read the first candidate rather than a guaranteed download.
What was not done
Nothing was rebuilt, and nothing was thrown away
Originals are untouched
The AVIF and WebP files sit alongside the originals, never over them. Deactivate the plugin and the site serves exactly the bytes it did before, because those bytes never moved.
No browser is left behind
Serving uses <picture>.
Anything that cannot read AVIF takes the WebP, and anything that cannot read either takes
the original. Nobody sees a broken image.
The design did not change
Same theme, same layout, same photographs at the same dimensions. Put this against a screenshot from the week before and it should be indistinguishable.
Want the same measurement on your site?
The analyser fetches your real images and re-encodes them, so the figure you get is yours, not an average.
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