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Adding imagick support to Turnkey Linux WordPress
WordPress 4.7 features enhanced pdf thumbnail support which is requires imagick. Fortunately its very easy to add imagick support to Turnkey Linux WordPress. Just start Webmin, go to System > Software Packages and add the php5-imagick Package from APT. Restart Apache and you're done. When adding PDF's to the Media Library thumbnails are generated. There is a plugin to regenerate thumbnails on old PDF's but I haven't tried that yet.
Thanks to turnkey for creating these useful distributions.
Bjarne