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I searched in many articles but nobody has talked about this stuff. For example, google suggested JSON-LD for structured data but I wanna know if I add dozens line of JSON codes, does not it affect on my page speed badly?

I mean tools like GTMetrix pay attention to inline JS codes and say:

it is better to minify and load inline codes from a file instead of using them inline.

ThisIsWilliam
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    This question appears to be off-topic because it is about **SEO** which is off-topic at Stack Overflow. Please read ["Which SEO questions should be closed as non-programming/non-admin?"](//meta.stackoverflow.com/a/382618) to better understand when SEO questions are acceptable to ask here (most are not) and where you might be able to get assistance. Next time, please heed [the warning](https://imgur.com/a/enYwabk) and avoid asking non-programming related SEO related questions here. – John Conde Sep 28 '20 at 15:25

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LD-JSON sits separately to the HTML content on the page, so it’s easy to write and troubleshoot and should not be a problem with performance. You can allways use Google Tag Manager to generate JSON-LD and compare data.

Wiktoria Tranowska
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