Attachment Importer

Import attachments from another WordPress blog using a WXR file.

What is this?

I found the WordPress Importer plugin is good for importing posts and comments, but is lacking when it comes to importing large attachments (like images) from large sites. My import would often time out and crash. I wrote this plugin to help with my own blog migrations, but I hope you find it useful too.

Installation

Either a) download from the WordPress plugin repository, or b) upload the attachment-importer directory to your plugins directory.
Navigate to Plugins -> Attachment Importer and activate.
Go to Tools -> Import -> Attachment Importer to run.

Usage

As a prerequisite, import your WXR file using the WordPress importer, but do not select the option to Download and Import Attachments. I have found that an import file up to 15MB big will work as long as you don't import attachments.
Navigate to the Attachment Importer screen.
Select your WXR export file.
Select the user you would like to be the owner of the downloaded images. Default: current user.
Sit back and let the importer run. The process can take as little as 10 seconds for 10 images, or about two hours for 2000 images. These times depend on the server that hosts your WordPress site.
If you receive any errors during the process, try running the file again after it finishes. The plugin is programmed to ignore files that match the following criteria:
- Same name
- Same file name
- Same upload date
- Same file size

How it works

This plugin uses FileReader and to parse the XML file in the browser, then uses ajax to request WordPress perform individual uploads.

License

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

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 Street, Fifth Floor, Boston, MA 02110-1301, USA.

The license and copyright applies to all resources bundled with this plugin, except as noted below:

Portions of this plugin use code from:

WordPress Importer which is distributed under the terms of the GNU GPL v2, Copyright (C) 2013 wordpressdotorg.
jQuery UI Smoothness Theme which is distributed under the terms of MIT License, Copyright (C) 2014 jQuery Foundation and other contributors.

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