To add mobile featured image, upload in the meta box right below WordPress Featured Image called Mobile Featured Image.
The image is added to the srcset attribute of your featured image.
This plugin works by filtering the function and changing the url for all screens under 980w to the mobile featured image 980w is reliable breakpoint between iPhone 6+ and iPad, two common measures for when image would be needed...
Add the mobile featured in the metabox just below the featured image...
The image is added to the srcset attribute of the image.
The srcset tells modern browsers which image is most appropriate for the size of the device so the visitor doesn't have to download image to show on small phone screen...
Screen Options tab on the top will not open, so I can't reach the settings to turn page features on off..
box shows up at the bottom of the sidebar for Mobile Featured Image, but there is no way to select image no link..
In short, does this not allow me to add smaller featured image for mobile, but it destroys lot of WordPress admin page functionality..
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
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