Our tool was unable to determine the size of a file you are linking to. This can happen if the server hosting the file doesn't provide size information correctly. It's a good idea to manually check the file to ensure you aren't unknowingly linking to an excessively large file that could cause a poor user experience.
Our analyzer could not retrieve the `Content-Length` header for a linked file.
Download the file yourself to check its size. If it's large, consider adding the file type and size to the link text as a courtesy to your users (e.g., 'Download Report (PDF, 10 MB)').
Manually verifying uncertain links helps you prevent a negative user experience where a user might accidentally start a very large download without warning.
This issue can affect your site's search engine rankings and user experience. Addressing it promptly helps ensure optimal performance and visibility in search results.
Black SEO Analyzer automatically checks for this warning during site analysis, along with hundreds of other technical SEO issues.
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