Home : File Types : HDX File

.HDX File Extension

File TypeDelphi MultiHelp Index File

2.5 (4 Votes)
CategoryMisc Files

What is an HDX file?

Help documentation file used by older versions of AutoCAD design software; uses the filename ACAD.HDX and supplies an index for an associated ACAD.HLP (.HLP) file; not used by recent versions of AutoCAD.

Open over 300 file formats with File Viewer Plus.

Programs that open HDX files

Updated 10/10/2012

About HDX Files

Our goal is to help you understand what a file with a *.hdx suffix is and how to open it.

The Delphi MultiHelp Index file type, file format description, and Windows programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

If you would like to suggest any additions or updates to this page, please let us know.