FaxLogic typically supports a variety of file formats for sending and receiving faxes. The most commonly accepted formats include PDF, TIFF, and JPEG. These formats ensure that documents retain their layout, structure, and quality when transmitted via fax. Additionally, many users find other formats such as DOC, DOCX, XLS, and XLSX to be supported as well, but it is always advisable to check the specific guidelines provided by FaxLogic for the most accurate and updated information. It is also important to ensure that the files sent do not exceed the size limits imposed by the service. For detailed specifications on supported file formats and other related inquiries, it might be helpful to look at the information available on the official FaxLogic website.