CHM File Converter
Online CHM File Converter - Instant Download!
Drag your file here to to upload.
Up to 250MB
How to Use MS Compiled HTML Help Converter
Step 1 – Upload MS Compiled HTML Help file
Drag your .CHM file or use the browse button.
Step 2 – Choose Format
Select the desired output format from the dropdown list.
Step 3 – Download File
Click "Convert" and download your converted file once ready.
About MS Compiled HTML Help (.CHM)
CHM files are compiled HTML help files used primarily for software documentation on Windows. They bundle multiple HTML pages, images, and an index into a single, compressed file for easy access. Originally introduced by Microsoft in the late 1990s, CHM files became a standard for offline help systems in Windows applications.
Technical Details
CHM files are essentially a collection of HTML pages compiled using the Microsoft Compiled HTML Help format. They use the LZX compression algorithm to reduce file size and contain an internal index and table of contents for navigation. The format is based on the Microsoft Compressed HTML Help file format, which is a proprietary archive format.
Additional Information & Use Cases
CHM files support full-text search and hyperlinks, making navigation through extensive help content straightforward. They are commonly created using Microsoft's HTML Help Workshop tool. Despite their popularity, CHM files have limitations with modern web features and security concerns, leading to a decline in their use.
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