Opera users can now add a Push to Kindle button to the browser’s toolbar.
Although not technically an Opera extension, it works in almost exactly the same way as our Chrome and Firefox extensions. Unlike our bookmarklet, this can be added to the toolbar itself and will show up with an icon.
To install, simply drag the Opera link shown on the Push to Kindle extensions section to your toolbar.
Many thanks to Alexander Shchadilov for letting us know about this technique.