Skip to main content
filepuli
Formats
PrivacyAll tools
Formats/Compiled HTML Help
Archive

Compiled HTML Help .chm

What is Compiled HTML Help?

A Microsoft help package containing HTML pages and related resources.

Server processing uses engines we host. Availability depends on the deployed engine and supported file variant.

Technical details

CHM is a compiled HTML Help container with indexed topics and associated images, table of contents, and search data. [1]

Background and compatibility

Microsoft HTML Help Workshop compiles help projects into CHM; the format belongs to the Windows help ecosystem. [1]

Sources and references
  1. HTML Help WorkshopMicrosoft Learn

Preview on your device

Archive entries with filenames and expanded sizes. Links and special filesystem entries are skipped.

Conversion support

Choose a file in the workspace to see the available output formats and options. A supported container may still contain an unsupported codec.

Read the format reference on Wikipedia ↗

File format at a glance

Extension
.chm
MIME type
application/vnd.ms-htmlhelp
Category
Archive
Processing
Browser or hosted engine, depending on the conversion
Open CHM converter

CHM conversions

CHM to AZW3CHM to DOCXCHM to EPUBCHM to FB2CHM to HTMLZCHM to LITCHM to LRFCHM to MOBICHM to OEBCHM to PDBCHM to PDFCHM to PMLZCHM to RBCHM to RTFCHM to SNBCHM to TCRCHM to TXTCHM to TXTZ

Related tools

File converterArchive extractor

© 2026 Filepuli

Convert files. Preview and download the results.

Convert

ImagesVideoAudio

Tools

Optimize PDFExtract filesPDF tools

Resources

Format guideAll conversion tools

About

PrivacyCredits & licensesAll tools