Forum Discussion

Cirrostratus

Apr 04, 2025

Compression does not work

hello , I create compression profiles with these content . and add this profile my standart + http profile .. But both does not make any content compression. What I am missing ?

application delivery

Jeff_Granieri

Employee

Apr 04, 2025

Hi Ozzy,

Can you do a browser test to the VIP and use developer tools in the browser and look for the "Content-Encoding" header in the HTTP response? You should see that header along with a value of gzip/deflate/ etc. You can also use a curl statement to test/verify as well:

curl -I -H "Accept-Encoding: gzip, deflate, br" https://yourwebsite.com

Additionally, you can try to compare file sizes of the content your are trying to access by using adjusting the "Accept-Encoding" headers: some examples below:

With compression: curl -H "Accept-Encoding: gzip" https://yourwebsite.com > compressed.html

Without compression: curl -H "Accept-Encoding: empty" https://yourwebsite.com > uncompressed.html

Compare file sizes using

The backend web server also need to support this, if its Nginx - check for gzip on if its Apache - mod_deflate,

Ozzy
Cirrostratus
Apr 04, 2025
I can not see any encoding header with
curl -I -H "Accept-Encoding: gzip, deflate,br" https://wiki-test.company.com
HTTP/1.1 404 Not Found
Date: Fri, 04 Apr 2025 14:45:39 GMT
Server: BigIP
Content-Length: 3186
Connection: close
Content-Type: text/html; charset=utf-8
X-Frame-Options: DENY

04/04/2025 16:48 0 compressed.html
04/04/2025 16:48 0 uncompressed.html
2 File(s) 0 bytes
0 Dir(s) 194,474,168,320 bytes free

should I undertand , backend server does not support compression ?