Title: Why is there Base 64 code in plugin's CSS file?
Last modified: August 30, 2016

---

# Why is there Base 64 code in plugin's CSS file?

 *  Resolved [bestjimmy](https://wordpress.org/support/users/bestjimmy/)
 * (@bestjimmy)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/why-is-there-base-64-code-in-plugins-css-file/)
 * Hello,
 * Is there supposed to be base 64 code in your plugin’s CSS files?
 * I’ve updated to latest version – code still there. Deleted and reinstalled – 
   code still there.
 * These screenshots are from All-in-One Event Calendar by Time.ly, version 2.3.3.
 * Screenshot 1: [http://i.imgur.com/xE3toMC.png](http://i.imgur.com/xE3toMC.png)
   
   Screenshot 2: [http://i.imgur.com/4JYaho8.png](http://i.imgur.com/4JYaho8.png)
 * Thank you.
 * [https://wordpress.org/plugins/all-in-one-event-calendar/](https://wordpress.org/plugins/all-in-one-event-calendar/)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [cefiar](https://wordpress.org/support/users/cefiar/)
 * (@cefiar)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/why-is-there-base-64-code-in-plugins-css-file/#post-6504705)
 * If you look at the path for the file, you will note that these files are all 
   in a directory called `cache`.
 * Ai1ec creates these files with the latest CSS required automatically. Without
   them, you will have zero style on your site.
 * Just to note: The “Theme Options” section simply modifies the CSS to use and 
   then writes it out to the cache.
 *  Thread Starter [bestjimmy](https://wordpress.org/support/users/bestjimmy/)
 * (@bestjimmy)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/why-is-there-base-64-code-in-plugins-css-file/#post-6504706)
 * Thank you, I understand the need for CSS (styling) but does that address why 
   there is base 64 code present? I thought base 64 code was always a sign of malware.
 *  [cefiar](https://wordpress.org/support/users/cefiar/)
 * (@cefiar)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/why-is-there-base-64-code-in-plugins-css-file/#post-6504707)
 * It’s a time-code signature that indicates when the CSS was generated by Ai1ec.
 * Despite what people may tell you, using Base64 in filenames is NOT a sign of 
   malware. Some malware may use the technique, but it’s been in use by legitimate
   programs and plugins for many years before malware writers started using it.
 * You may as well be asking why the plugin is written in PHP, since much of the
   malware out there is written in PHP.
 *  Thread Starter [bestjimmy](https://wordpress.org/support/users/bestjimmy/)
 * (@bestjimmy)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/why-is-there-base-64-code-in-plugins-css-file/#post-6504708)
 * Interesting. Thanks for your insight, cefiar.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Why is there Base 64 code in plugin's CSS file?’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/all-in-one-event-calendar.svg)
 * [Timely All-in-One Events Calendar](https://wordpress.org/plugins/all-in-one-event-calendar/)
 * [Support Threads](https://wordpress.org/support/plugin/all-in-one-event-calendar/)
 * [Active Topics](https://wordpress.org/support/plugin/all-in-one-event-calendar/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/all-in-one-event-calendar/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/all-in-one-event-calendar/reviews/)

 * 4 replies
 * 2 participants
 * Last reply from: [bestjimmy](https://wordpress.org/support/users/bestjimmy/)
 * Last activity: [10 years, 11 months ago](https://wordpress.org/support/topic/why-is-there-base-64-code-in-plugins-css-file/#post-6504708)
 * Status: resolved