Broken links are URLs that don’t take the user where they’re supposed to.
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Checking for this is a tideous process. It is recommended that a broken links checker tool is used.
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Regular checking for broken links is recommended as too many bad redirects can reduce the sites search engine ranking.
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As the site grows, it is inevitable that a user will come across a broken link. So, it is recommended to create a personalized 404 layout.