How do I optimise PrestaShop images for web?
In Design → Image Settings, configure appropriate sizes for each image type — do not use huge images where thumbnails suffice. Enable image compression in your server (mod_pagespeed, or a CDN with image optimisation). Before uploading product images, compress them using tools like TinyPNG, ShortPixel, or Squoosh. Our Lazy Loading module also helps by deferring off-screen images. WebP format is supported in newer PrestaShop versions and offers 25-35% smaller files than JPEG at equivalent quality.
Learn more: PrestaShop performance guide.
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