ClipCloud for WordPress solves these problems easily!
Key features
Third-party services
This plugin uses the ClipCloud API to generate images.
Only some settings you specify in this plugin and a portion of the post content required for image creation (the title and/or H-subheadings, depending on your settings) will be sent to our servers. If “Speed up generation” is enabled, the publicly accessible URL of your website will also be sent.
The plugin does not collect any personal or other data beyond what is described above. No tracking is performed. No other website parameters are sent to our servers.