Entity tags (ETags) are a mechanism to check for a newer version of a cached file. Removing the ETag reduces the size of the HTTP headers in both the response and subsequent requests.
If you have access to httpd.conf, you can add
FileETag None
Or if you can only access .htaccess only, you can add
Header unset ETag
FileETag None
Your web site Yslow performance grade should improve.
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mm…this didn’t work for me. I have tried adding
Header unset ETag
FileETag None
to the .htaccess but yslow is still giving me a hard time. I wonder if I have misconfigured it or placed it in the wrong spot.