Title: Plugin works only partially
Last modified: May 20, 2019

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# Plugin works only partially

 *  [rabox66](https://wordpress.org/support/users/rabox66/)
 * (@rabox66)
 * [7 years ago](https://wordpress.org/support/topic/plugin-works-only-partially/)
 * Hi,
    the plugin unfortunately works only partially. I created a showcase for 
   my customers that shows the possibilities of ultra-fast loading. [https://technik.gruenkraft.design/](https://technik.gruenkraft.design/)
   It should serve as a modell for my clients so they can see what ist possible 
   with which kind of technology. I already have a loading-time round about 1 second,
   but…
 * I use exactly 7 PNGs on the homepage. 3 PNGs are used in the animation of the
   wheelchair. (Unser Angebot #5: Barrierenfreies Webdesign). And 4 PNGs are used
   in the footers widgetarea (The 4 logos).
 * If I inspect the code in Chrome I see WebP in the sourcecode. That is good. 😉
   
   In Firefox I see a PNG. That is strange. 😉 In Safari i see PNGs. That is good.
   😉 But the strangest of all is, that if I test the site on GT-Metrix (used browser:
   Chrome), GT-Metrix complains about the size of the images and gives me the URLs
   of the PNGs.
 * Complaining about the size is OK. I have not chosen the right size now. But showing
   me URLs of the PNGs ist really strange.
 * Please help me! My clients ask me regularely how to speed up their sites and 
   I would really like to recommend your plugin. But if it does not work on GTMetrix,
   it is more or less worthless, cause it will not be considered in the results 
   of the tests.
 * Thank you for suggestions to resolve the bug.
    Raphael
    -  This topic was modified 7 years ago by [rabox66](https://wordpress.org/support/users/rabox66/).
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fplugin-works-only-partially%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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 * Last reply from: [rabox66](https://wordpress.org/support/users/rabox66/)
 * Last activity: [7 years ago](https://wordpress.org/support/topic/plugin-works-only-partially/)
 * Status: not resolved