.QXL File

The qxl file extension is associated with QarkXPress.

The qxl files are libraries. Libraries are convenient for storing frequently used page items such as logos, publication mastheads, legal text, and photographs. You can store up to 2,000 entries in an individual library. A library entry can be a text box, text path, picture box, line, multiple-selected items, or a group. To move entries in and out of libraries, you simply drag them or cut/copy and paste them.

Libraries are good for storing items that may be needed at any time in a layout. For example, corporate logos, legal information, commonly used pictures and text, chart formats, and clip art are all good candidates for library entries. Items with hard-to-remember formatting can also be saved in a library.
Libraries can be imported into opened QuarkXPress document.

Mime types:
application/quarkxpress
application/x-quark-express

A qxl file extension is related to the QuarkXPress, a software for Windows and Mac that allows users to create page layouts. A qxl file stores element library.

How to open:

Use QuarkXPress to open *.qxl element library files.

How to convert:

Probably data stored in *.qxl files can be exported to other formats.