When it comes to modern faxing, flexibility matters. Organizations rely on many different document formats every day, and the ability to fax those files without extra steps or manual conversion is critical for efficiency. One of the most common questions we receive is: What file types does Lane support for faxing?
File Types Supported by Lane Passport
The Passport Message Server from Lane is designed to accept a wide range of commonly used file formats. This allows users to fax documents directly from the systems and applications they already use, without needing to convert files beforehand.
Some of the most frequently used supported file types include:
- RTF
- HTML
- TIFF
- PCL
- TEXT
- DOC and DOCX
In addition to these formats, Passport can process many other file types as well, making it a flexible solution for organizations with diverse document workflows.
How File Conversion Works
Regardless of the original file format submitted, all faxes sent through Lane are converted to TIFF format before transmission. This conversion is intentional and important.
TIFF is the industry-standard format for faxing because it ensures consistent image quality and broad compatibility with fax infrastructure worldwide. By converting files automatically, Lane removes the burden from users while ensuring every fax is sent in a format optimized for successful delivery.
This process happens behind the scenes, so users can focus on sending documents, not managing file formats.
Page Limits and Transmission Time Considerations
Lane caps fax transmissions at a maximum of 500 pages per fax. This limit helps maintain reliability and predictable transmission performance, especially for high-volume or mission-critical faxing environments.
As a general planning guideline, it’s helpful to estimate approximately one minute per page when sending large faxes. Actual transmission times may be faster depending on network conditions and destination capabilities, but this rule of thumb provides a realistic expectation for longer documents.
Why File Type Flexibility in Fax Matters
Supporting multiple file formats means fewer workflow disruptions. Teams can fax contracts, reports, medical records, invoices, and other documents directly from their native formats without additional software or manual conversion steps.
By handling file compatibility, conversion, and transmission automatically, Lane helps organizations streamline faxing, reduce errors, and save valuable time, especially in regulated industries where fax remains a critical communication channel.
If you have questions about specific file types, large document faxing, or optimizing your fax workflows, Lane’s team is always available to help.



