Massive Prestashop speedup by GZIP-compression

[Pluncker]

Following to a recommendation from gtmetrix.com, I enhanced the .htaccess file (in PS root directory) with:

<IfModule mod_deflate.c>
  # Compress HTML, CSS, JavaScript, Text, XML and fonts
  AddOutputFilterByType DEFLATE application/javascript
  AddOutputFilterByType DEFLATE application/rss+xml
  AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
  AddOutputFilterByType DEFLATE application/x-font
  AddOutputFilterByType DEFLATE application/x-font-opentype
  AddOutputFilterByType DEFLATE application/x-font-otf
  AddOutputFilterByType DEFLATE application/x-font-truetype
  AddOutputFilterByType DEFLATE application/x-font-ttf
  AddOutputFilterByType DEFLATE application/x-javascript
  AddOutputFilterByType DEFLATE application/xhtml+xml
  AddOutputFilterByType DEFLATE application/xml
  AddOutputFilterByType DEFLATE font/opentype
  AddOutputFilterByType DEFLATE font/otf
  AddOutputFilterByType DEFLATE font/ttf
  AddOutputFilterByType DEFLATE image/svg+xml
  AddOutputFilterByType DEFLATE image/x-icon
  AddOutputFilterByType DEFLATE text/css
  AddOutputFilterByType DEFLATE text/html
  AddOutputFilterByType DEFLATE text/javascript
  AddOutputFilterByType DEFLATE text/plain
  AddOutputFilterByType DEFLATE text/xml

  # Remove browser bugs (only needed for really old browsers)
  BrowserMatch ^Mozilla/4 gzip-only-text/html
  BrowserMatch ^Mozilla/4\.0[678] no-gzip
  BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
  Header append Vary User-Agent
</IfModule>

This allows a GZIP-compression on Apache server. The effect is massive on my PS 1.6.0.13-installation! Loading time is increased by near 60%!

 

However, there is already a <IfModule mod_deflate.c>-statement in my .htaccess, automatically generated by PS:

<IfModule mod_deflate.c>
	<IfModule mod_filter.c>
		AddOutputFilterByType DEFLATE text/html text/css text/javascript application/javascript application/x-javascript font/ttf application/x-font-ttf font/otf application/x-font-otf font/opentype
	</IfModule>
</IfModule>

which seems not have any effect at all! Whatever - with gtmetrix-Code, PS is running like hell on my dedicated server...

 

 

[Pluncker]

Ok, mod_filter isn't installed on my server, preventing the execution of the generated AddOutputFilterByType DEFLATE-code.

​Are there any drawbacks using AddOutputFilterByType DEFLATE without installed mod_filter?

[bellini13]

This really has nothing to do with Prestashop, this is just smart webserver configuration, and your host should have this enabled globally

 

As to your question about mod_filter, this might help

http://stackoverflow.com/questions/5230202/apache-addoutputfilterbytype-is-deprecated-how-to-rewrite-using-mod-filter