Attachment File Tester
You can test any file on this page - whether it can be indexed by the WP FTS Pro plugin or not. Some files can be encrypted or protected from copying. Currently, the plugin supports files of the following formats: PDF, TXT.
Upload your file to the form below to find out if the plugin can index it. (Do not worry about security - we do not store your files on the server too long, they will be deleted as soon as you close the browser.)