1. Click the attachment button on the navigation pane and click Add button in the Attachments panel, or choose Edit > File Attachment.
2. In the File At

1. Choose the File command in the Comment tab.
2. Position the pointer to the place where you want to attach a file as a comment > click the selected position.
3. In the Open dialog box, select the file you want to attach, and click Open.

Note: If you try to attach certain file formats (such as EXE), Foxit PDF Editor will provide you with a warning that your attachment will be denied due to your security settings.

To delete a destination, right-click a destination in the Destinations panel and choose Delete. Or choose the destination and press Delete on the keyboard.

To navigate to the location of a destination in the document, double-click the destination in the Destinations panel, or right-click the destination and choose Go To Destination. You can change the target location and the name of a destination by doing the following:

To sort destinations, choose Sort by Name or Sort by Page from the Options menu in the Destinations panel.

1. Navigate to the location in the document you want to set as the destination. 
2. In the Destinations panel, click the Create new destination icon or choose the New Destination command from the Options menu. Name the destination.
3. Save the document.
4. Create a link in the document with the Link command under the Edit tab.

You can remove the embedded page thumbnails from the document, which reduces the file size of the document.

1. Right-click any thumbnail and choose Remove Embedded Page Thumbnails. 
2. Click OK in the pop-up message box.
3. Save the file.

By default, in an opened PDF document, you can see the page thumbnail in the Pages panel in the Navigation pane. These page thumbnails are created on-the-fly whenever you open the Pages panel. For large documents, generating the page thumbnails can take several seconds. 

Embedding page thumbnails into the document makes them appear faster, but increases the file size. Page thumbnails are not embedded by default. To embed page thumbnails, do as the following:

You can click the Pages panel in the Navigation pane to view the page thumbnails. To resize a page thumbnail, do either of the following:

Foxit PDF Editor supports exporting and importing bookmarks. You may need to export bookmarks from your document to share the bookmarks with others who have a copy of a document without the bookmarks (or with an old version of the bookmarks). Or if your document is too large, you need to export and delete the bookmarks from the document, and then send the document (without bookmarks) and its bookmarks separately to others. Then users who receive the bookmarks can import the bookmarks to their documents.

To export bookmarks, follow the steps below: