HDT file extension. How to open and convert files with HDT file suffix

A hdt file extension is related to the documents, that contain HTML tree. Probably not used yet.

There are 3 other file types using
the HDT file extension!

.hdt - Proactive Windows Security Explorer hash data

.hdt - Helium Music Manager TagEditor file

.hdt - Adobe Photoshop HDR toning preset

Detailed description

Software that open hdt file

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HDT file extension - HTML document tree

What is hdt file? How to open hdt files?

File type specification:

Document file type

hdt file icon:

The hdt file extension is used for documents, that contain HTML tree from a syntactically correct HTML document.

Most likely some old format without support. No further information could be found.

This hdt file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Updated: April 19, 2024

The default software associated to open hdt file:

NotePad++ text editor

Company or developer:
Notepad++ Team

A very popular free text and source code editor. It supports syntax highlighting and syntax folding for C, C++, HTML, ASP, Java, Pascal, PHP, Cobol, CSS etc. Notepad++ also supports plugins to add new features. It is localized to many languages.

Help how to open:

Use text editor or web browser to open HDT HTML document tree file.

How to convert:

Probably cannot be converted to anything else.

List of software applications associated to the .hdt file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open hdt file, edit hdt file, convert hdt file, view hdt file, play hdt file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting hdt files.

Software that open hdt file - HTML document tree

Programs supporting the exension hdt on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open hdt file action.

Microsoft Windows:

Main software associated with hdt file by default:
NotePad++ text editor
Other suggested software:
Microsoft Windows NotePad

Apple macOS / Mac OS X:

TextEdit

Linux/Unix:

gedit

Browse by extension type:

Document

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