How can I tell if my server is serving GZipped content?

nginx compression gzip
Johnny picture Johnny · Feb 4, 2012 · Viewed 80k times · Source

I have a webapp on a NGinx server. I set gzip on in the conf file and now I'm trying to see if it works. YSlow says it's not, but 5 out of 6 websites that do the test say it is. How can I get a definite answer on this and why is there a difference in the results?

Answer

zoul picture zoul · Feb 4, 2012

It looks like one possible answer is, unsurprisingly, curl:

$ curl http://example.com/ --silent --write-out "%{size_download}\n" --output /dev/null
31032
$ curl http://example.com/ --silent -H "Accept-Encoding: gzip,deflate" --write-out "%{size_download}\n" --output /dev/null
2553

In the second case the client tells the server that it supports content encoding and you can see that the response was indeed shorter, compressed.

Related questions

From inside of a Docker container, how do I connect to the localhost of the machine?

So I have a Nginx running inside a docker container, I have a mysql running on localhost, I want to connect to the MySql from within my Nginx. The MySql is running on localhost and not exposing a port to …

Read More
NGinx Default public www location?

I have worked with Apache before, so I am aware that the default public web root is typically /var/www/. I recently started working with nginx, but I can't seem to find the default public web root. Where can I …

Read More
Where can I find the error logs of nginx, using FastCGI and Django?

I'm using Django with FastCGI + nginx. Where are the logs (errors) stored in this case?

Read More