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Compressing https://s3.lativ.com.tw/m/i/ProductShow/EDM_1180X557m_170825_TW.jpg could save 11.8KiB (20% reduction).
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Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 62% of the final above-the-fold content could be rendered with the full HTML response.
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 61.9KiB (65% reduction).
Compressing https://cdn.tagtoo.com.tw/gtm/js/jquery.js could save 61.9KiB (65% reduction).
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.