UPDATE March 23rd, 2018: Add From Server was closed as a plugin on the WordPress repo as of earlier today. No details yet on whether this was an action by the plugin author or the Plugin Review team.
UPDATE March 28th, 2018 The plugin author had the plugin removed temporarily and stated the following:
“Plugin was closed at my request as I got sick of the constant stream of complaints about it not working and reviews to that direction.
If you had the plugin automatically removed from your site, please complain to whomever did that, as that’s a step too far.
The plugin will be re-opened at a future time when I’ve had a chance to add the “THIS IS COMPLETELY UNSUPPORTED CODE FROM 8 YEARS AGO BUT STILL WORKS” warnings.
(Edit: re-opened, I’ll update warnings later)”
– Dion Hulse
UPDATE March 29th, 2018
According to the plugin author of Add From Server, the plugin is not actively supported, but the code works. Use it at your own risk.
If you are looking for alternatives, a newer plugin by another developer, Media From FTP, might be worth checking out, as it appears to work in a similar fashion.
Though this is not a common problem, there are times in WordPress when you may have to upload images via FTP to the server. This might occur during a migration from a server that is out of date or underpowered, where moving the Uploads folder via a plugin does not work as smoothly as expected. But uploading images directly to the target server through FTP produces another intriguing problem. The WordPress Media Library cannot “see” images that are not uploaded through the Media Library uploader, and therefore cannot be selected for use as Featured Images or in future Posts.
The Add From Server plugin imports your FTP uploads into the WP Media Library, and allows you to use them as you would normally.
After you install the plugin, you can set the options for who is allowed to import media from the server, either by user roles or by user name. You can also set the server path to uploaded media, or allow it to search the entire WordPress server install.
On the Import Media screen, you can drill down to find the media you want to import into the Media Library. There are also quick-jump links to the root folder, the wp-content folder and the uploads folder.
Once you find the images or media you need to import, just tick the appropriate checkboxes and import your FTP uploads into the Media Library.
Add To Server isn’t a plugin you should need very often, but it is good to know it is there and how to use it.