Why am I getting a 'Properly Defines Charset Error' on Google Page Speed Insights?

Technical Q&A

Topic summary

A user is encountering a “Properly Defines Charset Error” on Google PageSpeed Insights, despite having a <meta charset="UTF-8"> tag already present in their HTML theme’s header section.

Current Setup:

  • The charset meta tag exists within the first 1024 bytes of the HTML
  • Using a theme based on Beautify (unpaid version)
  • The theme appears to be from a YouTuber’s folder

Proposed Solution:

  • Add Content-Type: text/html; charset=UTF-8 to the HTTP response headers
  • This header-level declaration may resolve the error even though the HTML meta tag is already in place
  • Reference provided to Chrome Developer documentation on charset best practices

Status: The issue remains unresolved; the user is seeking clarification on whether the existing meta tag placement is correct or if additional HTTP header configuration is needed.

Summarized with AI on November 14. AI used: claude-sonnet-4-5-20250929.
1

i get this error on google page speed insights Properly defines charset Error! A character encoding declaration is required. It can be done with a tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

im using a youtubers theme which based on debutify however i haven’t paid for it ?

Maybe this is the problem as the line of code

is already in the theme folder so idk whats the go

2

To solve this you can add

Content-Type: text/html; charset=UTF-8

as you already have charset defined,it should not show this error, but you should try by adding content type.
You can check this.