When we add a widget on Blogger, the thumbnails will keep a default size of 72 x 72px which might not look good if we try to make them bigger using only CSS. However, with a bit of JavaScript we'll be able to replace the thumbnail with the same image of higher resolution and this way, larger images will no longer appear blurry.
In this tutorial we will see how we can replace the default thumbnail size of the popular posts widget but we can apply this trick on any of the blog widgets.
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