What is an HDX file?
The .HDX file extension represents multiple file types. Primarily, it functions as a Huawei Product Documentation Archive. Huawei Technologies uses these files to distribute and store offline technical manuals. Under the surface, these files rely on the standard ZIP format to package text, images, and formatting instructions into a single container.
Additionally, some .HDX files act as Home Design 3D project files. Users create these in Home Design 3D to store floor plans and 3D architectural models. These project files use a structured JSON format. A rare third format is the Delphi MultiHelp Index File, which is associated with older systems from Autodesk.
How to open HDX files?
To view a documentation archive on your local computer, you must install the Huawei Documentation Explorer application. If your file contains an architectural model, you must use the Home Design 3D software to render the floor plan.
Best practices and troubleshooting
Because an .HDX file can serve completely different purposes, users often encounter errors when they try to use the wrong application. If you have a Huawei archive but cannot install the official documentation software, you can use a technical workaround. Rename the file extension from .HDX to .ZIP. You can then extract the raw text and images using standard command-line tools or extraction software like 7-Zip.
Analyze and view files online
viewer.online/hdx analyzes .HDX files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. If your file has multiple possible meanings, we recommend using viewer.online/hdx to identify the actual format of your file.
Summary
Because .HDX files use the known ZIP format, viewer.online/hdx can safely open and display them online, eliminating compatibility problems.