HFD File
What are HFD files and how to open them
Are you having problems opening a HFD file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your HFD files.
What is a HFD file?
A .HFD file is a HotDocs Form Document file.
HotDocs Form Document File (.HFD) is a file type created and used by HotDocs, a document automation system by Mitratech formerly known from Matthew Bender, designed for producing digital forms. When you complete a form template (one that uses HotDocs's Envoy-based form format) by filling in answers via an interview or directly, saving it as a .HFD file produces a "form document" - a digital form with its fields populated with specific responses. This document retains the form layout and editable answer fields so you can later reopen it, review or change answers within HotDocs Filler, or reprint with the data embedded.
A .HFD form document is written by HotDocs when assembling a Form Template (.HFT) using user responses (often provided via the interview process) or from an answer source (.ANX). Once created, HotDocs Filler reads the .HFD to display the completed form for viewing, printing, or editing the answers. Although the layout, static text, graphics, and field placements come from the original Envoy-based form template, the computing or branching logic that was in the template is not dynamic in the .HFD document - fields simply show stored answers.
Technically .HFD is an Envoy-based format (the same layout system used in HotDocs Envoy-based Form Templates) rather than PDF-based. It belongs to the set of HotDocs file types called "Envoy-based." .HFD documents appear in the official HotDocs file extensions lists as "HotDocs Envoy-based Form Document."
How to open HFD files
We have identified one HFD opener that is compatible with this specific type of HFD file.
Programs that open HotDocs Form Document files
| HotDocs | Verified |
Last updated: August 7, 2026
Various apps that use files with this extension
These apps are known to open certain types of HFD files. Remember, different programs may use HFD files for different purposes, so you may need to try out a few of them to be able to open your specific file.
| HotDocs Filler | User submitted | |
| DocuCom PDFCore | User submitted | |
| Ls2Win - Tools for Data Logging | User submitted | |
| HotDocs Automator | User submitted |
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