Mobify tag not resizing and optimzing images

Sebastien Aug 05, 2014 06:40AM PDT


I tried to use mobify.js on my website. I placed the tag on top of the page and yet I don't see any image being resized or being served from mobify CDN. I tried with both the public website and the local website ( two performance projects in the backend here ) and nothing is happening.

Can you give me some help ?


( the website is here : )

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Michael Aug 06, 2014 03:48PM PDT Mobify Agent

Hi there,

We run A/B split tests to help determine the impact of Mobify Performance Suite’s optimizations, so it’s definitely possible that you were receiving the “disabled” test. This would cause you to see images that were not being resized by our Image Resizer service. To determine if you are receiving the “enabled” test, take a look at the cookies set on your domain (this is done through the ‘developer tools’ of your browser of choice, typically within a “Resources” panel. You’re looking for this cookie:


When the value of this cookie is ‘Disabled,’ optimizations are not being run. However, if the value is ‘Enabled’ then optimizations are running and you should see images being resized when viewing your site on a mobile device.

With a mobile user-agent emulated, I’ve taken a look at your site and it does appear to be resizing images when the cookie is set to ‘Enabled.’ You could try using a cookie editor extension for your browser, and manually change the value of the cookie to see it for yourself.

Hope that helps!


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