How to open GZip for your Discuz!

leon

I just finished config, and I find it worth to share.
Because it improve your discuz!x's visit speed obviously.

Test result

Whether compress	Yes
Type	gzip
Original	33277 bytes
After	8631 bytes
Percent	74.06%

My VPS is a centos 6.4 server, so I will show you about the procedure in a simple way.

1. Check your /etc/httpd/conf/httpd.conf, make sure they are available.

1. LoadModule deflate_module modules/mod_deflate.so
   
2. LoadModule headers_module modules/mod_headers.so

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2. Add the code to your httpd.conf, if you use a visual host, add to .htcaccess.

1. <IfModule mod_deflate.c>
   
2. 
   
3. #Necessary, tell your apache to compress
   
4. SetOutputFilter DEFLATE
   
5. 
   
6. #compress rate 1~9, suggest 6
   
7. DeflateCompressionLevel 6
   
8. 
   
9. #set to not compress gif,jpg,jpeg,png, because no much use and cost your CPU too much
   
10. SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png)$ no-gzip dont-vary
    
11. 
    
12. #like above , but set to exe, tgz, gz..etc
    
13. SetEnvIfNoCase Request_URI .(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary
    
14. SetEnvIfNoCase Request_URI .(?:pdf|mov|avi|mp3|mp4|rm)$ no-gzip dont-vary
    
15. 
    
16. #Set to work with text/html  text/css  text/plain, etc
    
17. AddOutputFilterByType DEFLATE text
    
18. 
    
19. #It will work on javascript files
    
20. AddOutputFilterByType DEFLATE application/ms* application/vnd* application/postscript application/javascript application/x-javascript
    
21. 
    
22. #It will work on php files
    
23. AddOutputFilterByType DEFLATE application/x-httpd-php application/x-httpd-fastphp
    
24. 
    
25. #Netscape 4.x has some problem with this function, so only conpress text/html
    
26. BrowserMatch ^Mozilla/4 gzip-only-text/html
    
27. 
    
28. #Netscape 4.06-4.08 has more problem, not open for them
    
29. BrowserMatch ^Mozilla/4.0[678] no-gzip
    
30. 
    
31. # A hack for IE, seems like for resolve some problem, I don't know the details
    
32. BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
    
33. </IfModule>

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3. Modify configuration in Discuz. Open"/config/config_global.php"
Replace:
$_config['output']['gzip'] ='0';
To:
$_config['output']['gzip']= '1';

4. restart your apache.
#service httpd restrat  

5. Test your site here. It is a chinese site, you can translate it by google.
http://tool.chinaz.com/Gzips/

Tips: How to verify whether your apache server support Gzip?
1. Input by cmd line: #httpd -M
2. Check these 2 module.
deflate_module (shared)
headers_module (shared)

ravipratap95

Another Way is to Simply add These Lines to .htaaccess and save...

# compress text, html, javascript, css, xml:
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript

ravipratap95

i tried your method i addded the code to htaccess and enabled gzip in config but got internal server error 500

vot

Ask your hosting support to check if mod_deflate is enabled.