Title: Not fully optimizing JPEG
Last modified: August 21, 2016

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# Not fully optimizing JPEG

 *  Resolved [James Kraus](https://wordpress.org/support/users/james-kraus/)
 * (@james-kraus)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/not-fully-optimizing-jpeg/)
 * EWWW doesn’t seem to fully optimize this image:
 * [http://imgur.com/UPvaY6w,Rrr04sF#0](http://imgur.com/UPvaY6w,Rrr04sF#0)
 * This album has the before/after results of manual compression of the image using
   jpegtran after EWWW tried to optimize it. Clearly there was room for improvement(
   69 KiB vs 40 KiB )
 * Do you have any idea why it isn’t completely optimizing?
 * [https://wordpress.org/plugins/ewww-image-optimizer/](https://wordpress.org/plugins/ewww-image-optimizer/)

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Plugin Author [Shane Bishop](https://wordpress.org/support/users/nosilver4u/)
 * (@nosilver4u)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/not-fully-optimizing-jpeg/#post-4688599)
 * Can I get a link to the completely unoptimized original? Neither of the ones 
   you posted appeared to be completely optimized. What options are you running 
   jpegtran with?
 *  Thread Starter [James Kraus](https://wordpress.org/support/users/james-kraus/)
 * (@james-kraus)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/not-fully-optimizing-jpeg/#post-4688600)
 * It looks like imgur compressed one of them automatically. Here’s a link to the
   uncompressed image and compressed image:
 * [https://www.dropbox.com/sh/bv2qbqambb8vtnx/hPDVqCyr18](https://www.dropbox.com/sh/bv2qbqambb8vtnx/hPDVqCyr18)
 * I’m just running
 * `jpegtran -optimize in.jpg out.jpg`
 *  Plugin Author [Shane Bishop](https://wordpress.org/support/users/nosilver4u/)
 * (@nosilver4u)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/not-fully-optimizing-jpeg/#post-4688602)
 * The answer is metadata. I wasn’t aware of this, but the default behavior of jpegtran
   must strip metadata. When I turned on metadata stripping, it reduced the original
   to the same size as the other.
 * EDIT: should have mentioned that the default behavior of EWWW IO is to NOT strip
   metadata.
 *  Thread Starter [James Kraus](https://wordpress.org/support/users/james-kraus/)
 * (@james-kraus)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/not-fully-optimizing-jpeg/#post-4688604)
 * Running EWWW on the image shows that there is “No savings” . I have remove metadata
   set to Enabled, but it doesn’t seem to be detecting the difference in file sizes.
 * I also can’t seem to empty the database for the plugin. I even tried deactivating
   and deleting the plugin.
 * Either way, it certainly isn’t registering there’s optimizations to be made: 
   [http://i.imgur.com/8i782WS.png](http://i.imgur.com/8i782WS.png)
 * Maybe this is related to my other ticket where Bulk Optimize doesn’t work?
 *  Thread Starter [James Kraus](https://wordpress.org/support/users/james-kraus/)
 * (@james-kraus)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/not-fully-optimizing-jpeg/#post-4688605)
 * I reran EWWW on a new version of the file:
 * > [Media Library ‹ Denimology — WordPress](https://imgur.com/R7wEDAu)
 * Seems to work.
 * It seems EWWW is only having problems stripping metadata from files that have
   already been optimized.
 *  Plugin Author [Shane Bishop](https://wordpress.org/support/users/nosilver4u/)
 * (@nosilver4u)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/not-fully-optimizing-jpeg/#post-4688727)
 * Depending on how you are attempting to re-optimize the image, it may outright
   refuse to re-optimize the images. Using the bulk-tool, you must check the Force
   box to re-optimize. Otherwise, you can just click the Re-Optimize link on the
   Media Library, and that will send the ‘force’ parameter to the optimize function.

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Not fully optimizing JPEG’ 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

 * [compress](https://wordpress.org/support/topic-tag/compress/)
 * [EWWW](https://wordpress.org/support/topic-tag/ewww/)
 * [image](https://wordpress.org/support/topic-tag/image/)
 * [jpegtran](https://wordpress.org/support/topic-tag/jpegtran/)
 * [lossless](https://wordpress.org/support/topic-tag/lossless/)

 * 6 replies
 * 2 participants
 * Last reply from: [Shane Bishop](https://wordpress.org/support/users/nosilver4u/)
 * Last activity: [12 years, 3 months ago](https://wordpress.org/support/topic/not-fully-optimizing-jpeg/#post-4688727)
 * Status: resolved