I would like to upload SVG images but it doesn’t work.
Even if I add height and width attributes to the <svg> tag, it still doesn’t work.
While it worked for the logo in header…
If it’s not possible to use SVG files for product category thumbnails, I would like to know why PNG or JPEG images look so blurry.
SVG images can’t be used for WooCommerce products and categories thumbnails. As for blurry images, you need to increase images sizes in Dashboard -> Appearance -> Customize -> WooCommerce -> Product images.