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Manage large adaptive (mobile-ready) images and automatically apply them to areas on your WordPress site as backgrounds. 
Pull beautiful photos from Unsplash using the in-built browser, or supply your own images from uploads and supplied URLs.
Usage
Once activated, go to Appearance > Nice Backgrounds. You can create one or more ‘sets’ of background images with 
different settings.
Note: This plugin typically deals with resizing very large images, if you’re having problems make sure your memory limit 
is sufficiently high enough to deal with some occasional heavy lifting.
Note: PNG images that are either very large or are 24-bit can be problematic. The exact details of this are yet to be 
determined.
<h3>Credits</h3>
Just the other day I read a fortune cookie that said something about giving credit. I threw it away, but here is a 
list of stuff I looked at to get some ideas of what to do for this plugin:
Simple Full Screen Background Image by Pippin Williamson 
https://wordpress.org/plugins/simple-full-screen-background-image/
Adaptive Images for WordPress by Nevma 
https://wordpress.org/plugins/adaptive-images/
Unsplash by Crew 
https://unsplash.com/
Drag and Drop File Uploading by Osvaldas Valutis 
https://css-tricks.com/drag-and-drop-file-uploading/
jquery-image-blob by Joe Nasca 
https://github.com/CoeJoder/jquery.image.blob
Scriptaculous blog 
http://www.scriptalicious.com/blog/

Nice Backgrounds

Manage adaptive (mobile-ready) images and automatically apply them as backgrounds. Pull beautiful photos from Unsplash or supply your own images.

Piotr Pesta

What colour is it when you browse your website? Bring more colour into your website with this ever-changing background. It changes background color of your website with the passage of time (time as a hexadecimal value). Remember that it doesn’t always look good with every theme, so test it with your theme first! To change clock syle, just edit style-hex-background-clock.css file.
If you would like to show your support for this software, please consider donating: <a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=EEDF5TV3M2WVG&lc=US" rel="nofollow ugc">Donate via PayPal</a>.

The Colour Clock

What colour is it when you browse your website? Bring more colour into your website with this ever-changing background.

Nice Backgrounds vs The Colour Clock