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How do I create a custom thumbnail?

1. Upload your media item.
2. Upload your thumbnail image.
3. Set your media item as the "Parent Image" in the properties for the thumbnail image.

How do I insert my thumbnail into a post?

1. While editing a post/page, click the icon to add a media item.
2. Choose the Gallery or Media Library tab, as appropriate.
3. Click the "Show" link for the item you want to add to your post/page.
4. Choose "Thumbnail" for the size option (for images) or the "Display" option (for other media).
5. Click "Insert into Post" to add the thumbnail, plus the usual link and caption, if applicable.

Note: For non-image media, you also have the option of adding an icon. This will use one of the default icons provided with WordPress, unless your theme supplies alternative icons.

Does the plugin work with the `[gallery]` shortcode?

The [gallery] shortcode will work normally, using your custom thumbnails where available. The included [gallery] shortcode does not include non-image media in your gallery. To customize this, use the post_gallery filter to create your own gallery code.