All about HM3 Files

The HM3 file type is primarily associated with Help & Manual.

HM3	File extension: HM3
	File type:	Ver 3 Help File Project

What is an HM3 file?

HM3 files mostly belong to Help & Manual by EC Software GmbH. Help & Manual is a single-source help authoring and content management system for both single and multi-author editing. Working with Help & Manual is as easy as writing text with a word processor, while all content is saved as pure XML in the background.

How to open HM3 files

You need a suitable software like Help & Manual to open an HM3 file. You need a suitable software like Help & Manual from EC Software GmbH to open an HM3 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your HM3 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a HM3 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online HM3 Text Viewer

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4 Steps to Open an Unknown .HM3 File

Because .HM3 files come from different programs, they aren't universally openable.

Identify the Source: If received from a technical writer or software developer, it is likely a Help & Manual Ver 3 Help File Project.
Check the Header: Inspect the first bytes in a text editor or hex viewer:
- Readable XML/text suggests a plain-text project.
- "PK" indicates a zipped archive.
- Unreadable binary means it requires specific software.
Use the Original Software: You usually need the original program, like EC Software's Help & Manual or a compatible help authoring tool. If uncertain, ask the sender.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for HM3 File Extension

Related files:

hm2, hmx, hmxz

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: Help & Manual 3 Project
EXEFile: %ProgramFiles%\Helpman3\HelpMan.exe %1

ProgramID: Help & Manual 3 Project
EXEFile: %ProgramFiles%\Borland\C++ Builder Companion Tools\EC Software\Help and Manual 3\HelpMan_Demo.exe %1

an hm3 Ver 3 Help File Project is a special file format by EC Software GmbH and should only be edited and saved with the appropriate software.

How to solve problems with HM3 files

Associate the HM3 file extension with the correct application.
Update your software that should actually open ver 3 help file projects. Because only the current version supports the latest HM3 file format. Search, therefore, e.g. on the EC Software GmbH manufacturer website after an available Help & Manual update.
To make sure that your HM3 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .HM3 file online - secure, fast, and no downloads needed.