Does Google use any “Language” flags / tags set within a PDF file when determining its language?

Posted by Ally Ak on Pro Webmasters See other posts from Pro Webmasters or by Ally Ak
Published on 2013-06-23T04:25:41Z Indexed on 2013/06/27 16:29 UTC
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When determining the language of a HTML page, I understand that Google looks at any language declarations that the page owner has set, and then also applies its own language detection algorithms.

But does Google similarly look at language meta data set in PDF files when determining a PDF file's language? (Authors of PDF files can set document-wide properties describing the language (or languages) contained within it.)

Or does Google rely exclusively on language detection algorithms and disregard the language flag set within the PDF file?

Can anyone shed any light?

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