Character set missing from the HTTP headers
URLs that do not specify the character set (charset) in the HTTP headers.
Why is this important?
It is important to specify a character set as early as possible - ideally in the HTTP headers - to allow the browser to begin parsing HTML and executing scripts immediately, which reduces latency time.
What does the Hint check?
This Hint will trigger for any internal URL that does not contain a charset in the HTTP headers.
How do you resolve this issue?
It is recommended to always specify the character set on the server-side whenever possible, via the HTTP headers.
Alternatively, if you do not have access to your server, ensure that the meta charset is the very first element in the <head>.