Transcripts have to be imported as native ASCII TXT files in order to be used in TranscriptPad. This is the standard file format created by court reporters/stenographers, and is the file type universally accepted by transcript review software.
If you have a transcript that is only available as a PDF file we recommend importing it into DocReviewPad where you can assign Issue Codes to certain pages of the transcript, and/or add sticky notes that will refer to certain lines of a page.