A daily updated filename extension database!

HKK file extension

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

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

Table of Contents

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

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

✅ HTML Help AutoIndex

HKK file is a HTML Help AutoIndex. HTML Help is a Microsoft proprietary online help format, consisting of a collection of HTML pages, an index and other navigation tools.
HKK format description not yet available
Application: Microsoft HTML Help
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
HKK aliases:
HKK related links:
HKK related extensions:
Windows Help File

Hypertext Markup Language Document

Compiled HTML Help

HTML Help Table of Contents

HTML Help Project

HTML Help Stop Words

Microsoft Sharepoint Site Template

HTML Help Collection

Microsoft Sharepoint Web Part Description

Microsoft Sharepoint Document Set Index

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

🚫 The .hkk file extension is often given incorrectly!

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

bkk, hk, hkl, hkm, hlk, hmk, kk

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Warhammer 40000: Dawn of War 2 Animation
BookBuddi eBook
Hallmark Card Studio Document
ASCA GIS Housekeeping Data
SyncCrypt Ransomware Encrypted Data
SHELX Reflection Data
RMCProfile H K L Range Data
Havok Movie File

🔴 Can't open a .hkk 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 .hkk 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 .hkk file extension, write to us!

🔴 Rate our HKK page

Please help us by rating our HKK page on a 5-star rating system below. (1 star is poor, 5 star is excellent)

5 of 5 stars (16 votes)
Thanks for voting!
Invalid vote.
Browser: Abbreviation Application Archive Audio Configuration Data Development Disk Image Document Ebook Font Game Data GIS Graphic Malware Multimedia Other Project Scam Unknown Video
This page is available in the following languages: Český Deutsch English Español Suomi Français Magyar Italiano 日本語 Nederlands Norsk Português Român Русский Svensk 中文