I raised the thumbnail size in the VirtueMart configuration from 90 to 300 px, but the category page still shows small, blurry images scaled up.
- Joomla
- 5.x
Solved Community
VirtueMart: product thumbnails are blurry after changing the size
Asked by jamesdd
Pro + Launch ·1 October 2026
·Last activity 2 weeks ago
Solution
VirtueMart creates a thumbnail once and keeps using it – the new size only applies to thumbnails it creates from now on. Delete the old ones so they are rebuilt: images/virtuemart/product/resized/ Empty that folder (keep the folder itself). The next visit to each category page creates the thumbnails again in the new size. On a big shop, open the category pages once yourself after deleting, so the first visitors don't wait.
3 replies
VirtueMart creates a thumbnail once and keeps using it – the new size only applies to thumbnails it creates from now on. Delete the old ones so they are rebuilt: images/virtuemart/product/resized/ Empty that folder (keep the folder itself). The next visit to each category page creates the thumbnails again in the new size. On a big shop, open the category pages once yourself after deleting, so the first visitors don't wait.
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