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7 Common WordPress Performance Mistakes That Slow Down Your Site

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WordPress site speed issues are often caused by multiple overlapping factors, not a single setting, according to a developer guide published on DEV Community. Common mistakes include uploading oversized images that are far larger than their display size, and relying solely on cache plugins that cannot fix deeper server or database problems. Loading unused JavaScript and CSS files on every page — even where those features are absent — adds unnecessary weight to each request. Misapplying lazy loading to above-the-fold hero images can also hurt Core Web Vitals scores, particularly the Largest Contentful Paint metric. The guide emphasizes diagnosing the root cause first, whether it lies in hosting, themes, plugins, images, or database queries, before applying any optimisation.

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7 Common WordPress Performance Mistakes That Slow Down Your Site · ShortSingh