This project is not covered by Drupal’s security advisory policy.
CSS Gzip will no longer be updated/supported and is considered obsolete. All future development is being done in the Advanced CSS/JS Aggregation module.
Based off of Javascript Aggregator this module will gzip your aggregated css files. For Drupal 6.x
Advantages
- It's compatible with Apache 1.3 (works great with cheap hosting).
- Compresses the content once and saves the result (less CPU load on server).
- Uses level 9 compression because it's only run once per file (smaller file size).
- In general, all you need to do is enable the module and it works (no core hacking/modifying .htaccess).
Disadvantages
- Requires Clean URL's in order to work (mod_rewrite).
- Tested on Apache, other http servers not tested.
- Requires download method to be public (check in admin/settings/file-system)
If your using private downloads, Gzipping of js & css can be achieved with the Boost module. I also recommend using the Parallel module as well for this use case (private downloads).
What about mod_deflate?
Long story short this is faster.
How do I know it's working?
The YSlow Firefox add-on has a tab called components; you can check for gzip compression there. See YSlow User Guide -> Components View.
Drupal 7?
This is part of core now!
Project information
Unsupported
Not supported (i.e. abandoned), and no longer being developed. Learn more about dealing with unsupported (abandoned) projectsObsolete
Use of this project is deprecated.- Project categories: Performance
162 sites report using this module
- Created by mikeytown2 on , updated
This project is not covered by the security advisory policy.
Use at your own risk! It may have publicly disclosed vulnerabilities.

