Title: Optimization failed
Last modified: August 22, 2016

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# Optimization failed

 *  Resolved [MarkDenis](https://wordpress.org/support/users/markdenis/)
 * (@markdenis)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/optimization-failed/)
 * Hi, I installed the plugin and tried to optimize the Images but it didn’t work,
   I got this message.
 * “EWWW Image Optimizer requires exec(). Your system administrator has disabled
   this function.”
 * (I am the system administrator)
    Does this have something to do with my security
   plugin? I use iThemes security.
 * Also in the Media library I now have a message after every image that says
    “
   jpegtran is missing” or “optipng is missing”
 * The website is [Cleggs Shoe Repair Dublin](http://cleggsshoerepair.ie/)
 * Any help would be greatly appreciated.
 * Thanks
 * [https://wordpress.org/plugins/ewww-image-optimizer/](https://wordpress.org/plugins/ewww-image-optimizer/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [nosilver4u](https://wordpress.org/support/users/nosilver4u/)
 * (@nosilver4u)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/optimization-failed/#post-5247557)
 * I don’t think iThemes security turns off exec. this is usually something set 
   in your php.ini file under disable_functions. Remove exec from that list, and
   then restart your web server daemon/service.
 * If you’re having trouble finding it, post your debug output from the plugin settings
   page (you have to turn on debugging first).

Viewing 1 replies (of 1 total)

The topic ‘Optimization failed’ is closed to new replies.

 * ![](https://ps.w.org/ewww-image-optimizer/assets/icon-256x256.png?rev=1582276)
 * [EWWW Image Optimizer](https://wordpress.org/plugins/ewww-image-optimizer/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/ewww-image-optimizer/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/ewww-image-optimizer/)
 * [Active Topics](https://wordpress.org/support/plugin/ewww-image-optimizer/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/ewww-image-optimizer/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/ewww-image-optimizer/reviews/)

## Tags

 * [plugin not working](https://wordpress.org/support/topic-tag/plugin-not-working/)

 * 1 reply
 * 2 participants
 * Last reply from: [nosilver4u](https://wordpress.org/support/users/nosilver4u/)
 * Last activity: [11 years, 8 months ago](https://wordpress.org/support/topic/optimization-failed/#post-5247557)
 * Status: resolved