Case study
Adande Refrigeration (Netherlands)
adanderefrigeration.nl
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.nl it is /, which went from
3.6 MB to 951 KB —
74.4% 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 | 3.6 MB | 951 KB | 74% |
| 404 2 | 2.8 MB | 739 KB | 74% |
| Energieverbruik | 2.2 MB | 690 KB | 69% |
| Under counter fridge only two drawer rear engine hcr2 series | 1.5 MB | 1.0 MB | 34% |
| Under counter two drawer side engine vcs2 series | 1.5 MB | 1.0 MB | 32% |
| Under counter shallow two drawer side engine vls2 series | 1.5 MB | 1.0 MB | 32% |
| Under counter one drawer side engine vcs1 series | 1.5 MB | 1.0 MB | 32% |
| Under counter two drawer rear engine vcr2 series | 1.5 MB | 1.0 MB | 32% |
| Under counter shallow one drawer side engine vls1 series | 1.5 MB | 1.0 MB | 32% |
| Under counter one drawer rear engine vcr1 | 1.5 MB | 1.0 MB | 32% |
| Producten | 1.5 MB | 1.2 MB | 22% |
| Chocolade ijs vis vlees | 1.2 MB | 693 KB | 45% |
| Worktop upstands | 1.0 MB | 931 KB | 13% |
| Koele verbindingen | 1.0 MB | 670 KB | 37% |
| Onze technologie | 871 KB | 693 KB | 20% |
| Vitrines voor de detailhandel aangedreven door aircell | 850 KB | 823 KB | 3% |
| Onze producten | 845 KB | 714 KB | 15% |
| Laten we het hebben over temperatuur | 836 KB | 797 KB | 5% |
| Draai het gas hoger koel het | 787 KB | 697 KB | 11% |
| Wat maakt adande zo anders | 762 KB | 667 KB | 12% |
| Iets meer over ons | 746 KB | 686 KB | 8% |
| Bedankt | 681 KB | 639 KB | 6% |
| Adande werkt harder om meer te doen | 669 KB | 656 KB | 2% |
| Grotere capaciteit kleinere voetafdruk | 668 KB | 653 KB | 2% |
| Contacto | 658 KB | 651 KB | 1% |
| Every page | 32.2 MB | 20.4 MB | 36.5% |
The images alone came down 85.4%. 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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