I have written (with the help of one of the Calibre developers) a small Calibre GUI plugin which aims to make it quick and easy to send one or more of your Calibre book covers to your Sony reader to use as Standby screen images when the Sony is in standby mode.
Testing by volunteers in this thread confirms that it will work on Windows, Linux or OSX.
It will allow you to customise the plugin to specify whether you want to:
*** Anyone wishing to install or read more about this plugin should follow this link to the Calibre Plugins sub-forum where all documentation has been consolidated ***
- rescale the cover image to exactly fill the screen,
e.g. 600x800 on a PRS-350/650/600,
or 600x1024 on PRS-950
- retain the aspect ratio of the original cover
- enable the ability to copy multiple covers (max 99)