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How to Diagnose and Fix a Slow WordPress Site: A Step-by-Step Guide

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WordPress sites can slow down due to multiple factors including overloaded hosting, bloated plugins, oversized images, and accumulated database data, making it difficult to pinpoint the root cause. Experts recommend establishing a performance baseline using metrics like TTFB, LCP, and FCP before making any changes, as these indicators help identify whether the bottleneck is server-side or frontend. Hosting infrastructure is a commonly overlooked culprit — if the server is consistently low on CPU or memory, frontend tweaks alone will not resolve the issue. A well-planned caching strategy covering page, object, browser, and CDN caching can significantly improve load times, though stacking multiple optimization plugins can sometimes worsen performance. Auditing plugins individually using tools like Query Monitor is advised to detect slow database queries, excessive asset loading, or unnecessary external API calls.

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How to Diagnose and Fix a Slow WordPress Site: A Step-by-Step Guide · ShortSingh