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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.
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Compacting CSS code can save many bytes of data and speed up download and parse times.
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None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
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Properly formatting and compressing images can save many bytes of data.
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Compressing and resizing https://nestenn.com/public/img/flag_uk.png could save 18.5KiB (96% reduction).
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