Specify Vary: Accept-Encoding Header

[webytechno]

I'm currently trying to speed up my site performance. I Performed check on Google Page Speed Insight and Gtmetrix. Getting an error "Specify Vary: Accept-Encoding Header" on both sites. After searching on google and reading several blogs, the solution I got was to paste some code in .htaccess file.

Below is the Code I paste according to blogs.

<IfModule mod_headers.c>
  <FilesMatch ".(js|css|xml|gz|html)$">
    Header append Vary: Accept-Encoding
  </FilesMatch>
</IfModule>

But this code didn't worked. Still, I am facing the same issue. Gtmetrix says that the issue is server-side. 

Anyone having a solution?

Website: ProaudioBrands.com

[PL281 · Accepted solution]

@webytechno 

I can see you are using Managed WordPress - the Accept-Encoding Header is coming from the content on the CDN - which is a separate server / config you don't have access to. 

It seems to be on you JS / CSS files - I recommend an optimization plugin which merges these files together - It will still flag on this, but typically has a lower impact as you don't have as many files affected by it