Title: Default png-optimization lib?
Last modified: August 30, 2016

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# Default png-optimization lib?

 *  Resolved [drimendo](https://wordpress.org/support/users/drimendo/)
 * (@drimendo)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/default-png-optimization-lib/)
 * Great Plugin!
 * I’m just curious which png optimization plugin is being used on default: optipng
   or pngout. For both of them you can set the optimization level.
 * [https://wordpress.org/plugins/ewww-image-optimizer/](https://wordpress.org/plugins/ewww-image-optimizer/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Shane Bishop](https://wordpress.org/support/users/nosilver4u/)
 * (@nosilver4u)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/default-png-optimization-lib/#post-6770997)
 * the default is optipng, since we can’t redistribute pngout. However, if you install
   pngout, it does both for maximum compression.

Viewing 1 replies (of 1 total)

The topic ‘Default png-optimization lib?’ 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)
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 * 1 reply
 * 2 participants
 * Last reply from: [Shane Bishop](https://wordpress.org/support/users/nosilver4u/)
 * Last activity: [10 years, 6 months ago](https://wordpress.org/support/topic/default-png-optimization-lib/#post-6770997)
 * Status: resolved