CHM Viewer Tool is able to open any type of CHM file from any version of Windows OS. This tool helps to view CHM file from any version of HTML format. CHM Reader support CHM file of any size (for e.g. 100 MB CHM file) & explore CHM File in original format without changing the file format. A user could easily preview CHM file & able to take. CHM document is a collection of HTML pages, compressed and packed as a single file. Files are compressed with lzx algorithm. CHM document also contains additional files like pre-build search index, table of contents structure etc. For the most complete description of the CHM format, you can read Unofficial HTML Help Specification.

CHM Viewer

Introduction

CHM Viewer is a free software to view CHM format files, it can quickly open the *.chm file, format and display the contents, and it is a completely freeware, easy to use very much.

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Hot to Use

In main menu, select 'File' -> 'Open' (hot-key is 'Ctrl + O'), and choose one (*.chm) file, so you can browse the contents of the file.

After the CHM file is opened, in main menu 'Option', you can modify the default font, and can zoom in and zoom out default font size, zoom in hot-key is 'Ctrl + NUM+' and zoom out hot-key is 'Ctrl + NUM-'. You can also change default font color, viewer background color and hot spot color.

The Find function's hot-key is 'Ctrl + F', it allows you to easily search the contents of the file.

If your CHM files include images, you can right-click on the image, software will pop up a shortcut menu. You can copy the image to the Clipboard, ot save it as JPG/JPEG, BMP, PNG and GIF image file.

In addition, CHM Viewer also supports the Export function, you can output the entire contents of your CHM files, save it as HTML files. Select the 'Export as HTML Files' in main menu 'File', software will let you specify a folder, this folder will be used to store all output HTML files and images.

Screenshot

CHM File Format

The CHM's full name is Compiled HTML Help, it is an unique help file format on Windows platform, it's file extension icon is usually a document icon with a question mark, that mean these files are help documentations. Today, The Internet have a lot of e-books in CHM formatm, it is popular.

In Windows OS, some CHM files can not be displayed, while open a CHM file, you will get a message like 'Cannot open the file' or 'Navigation to the webpage was canceled', that is because some CHM files that you downloaded from the Internet may with some safety issues, so it must be unlocked in order to display. But using CHM Viewer, you can safely open these files, because it does not use IE to display HTML files, so it can avoid these potential security issues.

CHM

CHM is an HTML help file for online helps. It is proprietary format from Microsoft. In CHM file a number of HTML help files are compressed, compiled and indexed. CHM files are used mostly as software manual. LZX compression technique is used to compress files in CHM format. There is a search option in this file. Moreover multiple CHM files can be added together.

PDF

PDF is a document file format that contains text, images, data etc. This document type is Operating System independent. It is an open standard that compresses a document and vector graphics. It can be viewed in web browsers if the PDF plug-in is installed on the browser.

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Chm Reader Android

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