bmsterling

Give you the ability to upload files that you have in your Media Library. ?It also let you insert more then one file into a post at a time.
Please submit any bugs or suggested improvements to <a href="https://github.com/bmsterling/Attachment-Extender/issues" rel="nofollow ugc">https://github.com/bmsterling/Attachment-Extender/issues</a>
Need this plugin customized or need a plugin created, contact me via my contact form at <a href="http://kenzomedia.com" rel="nofollow ugc">http://kenzomedia.com</a>
Also available through twitter, @bmsterling
<h3>Credits</h3>
Copyright 2011 Benjamin Sterling
This program is free software; you can redistribute it and/or modify 
it under the terms of the GNU General Public License, version 2, as 
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
along with this program; if not, write to the Free Software 
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Attachment Extender

Give you the ability to upload files that you have in your Media Library.  It also let you insert more then one file into a post at a time.

Samuel Aguilera

There are three possible scenarios where this plugin does something. In all cases, the attachment page must exists, the plugin will not run for deleted attachments:
A) A visitor lands on an attachment page and the parent post is available (not in trash or deleted). A 301 redirect will be issued to redirect the visitor to the parent post.
B) A visitor lands on an attachment page and the parent post was already deleted from trash. A 302 redirect is issued to home page (this can be changed to 301 if you want, see FAQ for more details).
C) A visitor lands on an attachment page and the parent post is in trash, therefore not available for the visitor. It returns a 404 error code to prevent endless redirection loop in old WP releases and redirecting to trashed/not available posts.
There is no options page, simply activate it and will do the job.
If you’re happy with the plugin <a href="https://wordpress.org/support/plugin/attachment-pages-redirect/reviews/?filter=5" rel="ugc">please don’t forget to give it a good rating</a>, it will motivate me to keep sharing and improving this plugin (and others).
<h4>Requirements</h4>
<ul>
<li>WordPress 4.8 or higher.</li>
</ul>

Attachment Pages Redirect

Redirect attachment pages or return a 404 error for them based on the parent post status.

Attachment Extender vs Attachment Pages Redirect