A daily updated filename extension database!

H1S file extension

The table below provides useful information about the .h1s file extension. It answers questions such as:

  • What is the .h1s file?
  • What program do I need to open a .h1s file?
  • How can the .h1s file be opened, edited or printed?
  • How can I convert .h1s files to another format?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Microsoft Help Compiled Help Data

H1S file is a Microsoft Help Compiled Help Data.
Category: Data files
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
H1S aliases:
H1S related links:
H1S related extensions:
Windows Help File

Windows Help Project

Microsoft Help Collection Definition

Microsoft Help Topic Definition

Microsoft Help Keywords Index

Microsoft Help VTopic Definition

Windows Help Project

Microsoft Help Validator File

Microsoft Help Merged Hierarchy File

Microsoft Help Merged Query Index

Other types of files may also use the .h1s file extension.

🚫 The .h1s file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

g1s, h15, h1c, h1q, h1w, hls, hs, hws, m1s

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Casio fx-9860G Flash System Image
Haskell Source
At Home Canada 2015 Tax Return Data
Hedgewars Saved Game
Microsoft Help Collection Definition
Hollywood Script
Microsoft Help Merged Query Index
Mach3 Macro
Microsoft Help Merged Keyword Index
HTTP Live Streaming Video

🔴 Can't open a .h1s file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .h1s file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .h1s file extension, write to us!

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Browser: Abbreviation Application Archive Audio Configuration Data Development Disk Image Document Ebook Font Game Data GIS Graphic Malware Multimedia Other Project Scam Unknown Video
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