Title: What does ‘Asset Optimization–>Activate’ do?
Last modified: January 27, 2020

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# What does ‘Asset Optimization–>Activate’ do?

 *  Resolved [Carl Gross](https://wordpress.org/support/users/carlgross/)
 * (@carlgross)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/what-does-asset-optimization-activate-do/)
 * Hello. If I open Hummingbird–>Asset Optimization, there is a blue ‘Activate’ 
   button ([screenshot](https://i.imgur.com/y3jk5cM.jpg)). What exactly will occur
   if I click this button? Specifically, will any changes be made to my site? Or
   will clicking this button just scan for changes to be made?
 * [This documentation page ](https://premium.wpmudev.org/docs/wpmu-dev-plugins/hummingbird/#minification)
   seems to say that changes will indeed be made. I’d just like to confirm that.
 * I believe I tried this once on another site, and changes were made which broke
   my site– changes which I could not undo. That’s the cause for my concern here.
 * Thanks.

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Support [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/)
 * (@wpmudev-support9)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/what-does-asset-optimization-activate-do/#post-12373721)
 * Hello [@carlgross](https://wordpress.org/support/users/carlgross/)
 * I hope all is well!
 * The Asset Optimization allows optimizing all the assets that are loading on your
   site. These assets are CSS, JS, and fonts.
 * If the Activate button is clicked, the plugin will scan for all available assets
   on your site, and within the asset list, you can choose which files to minify.
 * You may additionally enable advanced mode to reveal more options. Please have
   a look at this article with additional information on how to use Asset Optimization:
   
   [https://premium.wpmudev.org/blog/eliminate-render-blocking-issues-hummingbird/](https://premium.wpmudev.org/blog/eliminate-render-blocking-issues-hummingbird/)
 * Changes in Asset Optimization needs to be made one file at a time. Every time
   a change is made, please check the front end if all is well. If all is well, 
   continue to the next file.
 * Changes can be reverted and reset easily. If the front end appearance is affected,
   please unselect the last enabled option to revert back to the way it was.
 * Overall Asset Optimization setting can be reset or deactivated from Hummingbird
   > Asset Optimization > Settings. Please see this screenshot:
    [https://monosnap.com/file/JmMgeQeGzgAZ023qYE7oHK4BRg0LJ2](https://monosnap.com/file/JmMgeQeGzgAZ023qYE7oHK4BRg0LJ2)
 * Hope this helps!
 * Kind regards,
    Nastia
 *  Thread Starter [Carl Gross](https://wordpress.org/support/users/carlgross/)
 * (@carlgross)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/what-does-asset-optimization-activate-do/#post-12439820)
 * OK thanks. Sorry for the delay. We can consider this resolved.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘What does ‘Asset Optimization–>Activate’ do?’ is closed to new replies.

 * ![](https://ps.w.org/hummingbird-performance/assets/icon-256x256.gif?rev=2633221)
 * [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN](https://wordpress.org/plugins/hummingbird-performance/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/hummingbird-performance/#faq)
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 * [Active Topics](https://wordpress.org/support/plugin/hummingbird-performance/active/)
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 * 2 replies
 * 2 participants
 * Last reply from: [Carl Gross](https://wordpress.org/support/users/carlgross/)
 * Last activity: [6 years, 3 months ago](https://wordpress.org/support/topic/what-does-asset-optimization-activate-do/#post-12439820)
 * Status: resolved