Opening a KDH File

The KDH file type is primarily associated with CAJViewer.

KDH	File extension: KDH
	File type:	document file

What is a KDH file

KDH files mostly belong to CAJViewer. KDH files are digital document files often found in Chinese academic settings.

Chinese Journal Articles: They are used to store journal article content. These files work with specialized viewers like CAJViewer. More details can be found at CAJViewer.

Kingsoft Document Files: Identified as KDH 2.00 Cop, these files are another format for academic articles developed by Kingsoft.

Renamed PDF Documents: Some KDH files are actually PDF files with a changed extension. In such cases, Adobe Acrobat Reader may open them.

FilExt.com tip: Check the file’s internal format to choose the right viewer. Simple file property inspection can help determine if the file is a proprietary document or a renamed PDF.

How to open KDH files

You need a suitable software like CAJViewer to open a KDH 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 KDH file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a KDH file directly in the browser:. Just drag the file onto this browser window and drop it.

Online KDH Text Viewer

Choose your .kdh file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert KDH files:

CAJViewer
See the previous paragraphs to learn more about the main application. KDH files are often referred to as CAJViewer ebooks because this type of file is primarily created or used by this software.
CAJViewer
Chinese reader similar to Adobe Acrobat Reader; Chinese site. Files in this format come from the Chinese Academic Journals Online full-text database. The identifying characters used for this association are - Hex: 4B 44 48 20, ASCII: KDH.

KDH format details:

If you know the file format, you can also find out how to open or edit the file. The file format can be determined based on the file extension and the signature (the first few characters of a file). Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. If there are problems opening a file, you must first determine the file format used. Our examination of the KDH files comes to the following conclusion:

KDH is not a commonly used file extension and includes different formats for the applicable programs. The two most common formats are as follows:

35% of all KDH files belong to KDH document. These files are binary files, so they do not contain text, but only cryptic characters. The files are 400 KB to 4 MB in size, with a median of 2 MB. The file type is very recent. The keywords KDH 2.00 Copyright(C) 2000 CAJCD are typical for these files.
35% of all KDH files start with the magic bytes CAJ, which are always the first bytes of this file format. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. The files are on average 2 MB in size and range from 600 KB to 5 MB.

All other KDH files (30%) have different formats, often, for example, PDF. Drag & drop your file here to see the file format and a preview of your KDH file!

Technical Data for KDH File Extension

File classification:

eBook

Identifier:

Hex: 4B 44 48 20, ASCII: KDH (provided by TrID database)

Related files:

caj, rtf, odt, caj, zip, pdf, doc, docx

Mime type:

application/octet-stream

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: KDH.Document
EXEFile: %ProgramFiles%\TTOD\CAJViewer 5.5\CAJViewer.EXE %1

ProgramID: KDH.Document
EXEFile: C:\XPB-Book\TTOD\CAJViewer 5.0\CAJViewer.EXE %1

a kdh document file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with KDH files

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