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iChm is a chm file reader for Mac OSX.

Features include:

  • Fully built with Cocoa. No ugly window and slow rendering.
  • Tab browsing
  • Search through the chm file. Automatically sorted by relevance.
  • Search in Index by title.
  • Find in the page
  • Index
  • Save whole file to PDF
  • Continuous reading with Page down/Page up
  • Text encoding switching
  • Tag powered bookmark
  • Back/Forward/Home
  • Text zoom
  • Automatically locate current document in table of content
  • Localized in 6 languages

What's New

Versino 1.4.3:
  • This is a minor release for bug fixing
  • Fix scroll tailing bug on OS X 10.7 Lion


Mac OS X 10.5 or later

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iChm User Discussion

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jozeppy26 Member IconReview+3

4/5 stars only because it would be nice if it included a Quicklook plugin for viewing CHM files and generating previews.

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Version 1.4.3
Cephas Member IconReview+0

Wow. I didn't realise there were such good and useful and SMALL apps out there!

I'm a new Mac owner (15 days and counting), and I've seen many of the big apps now as I scramble to come up to speed.

In my case, I thought calibre was a great tool for converting various formats (and it is); but iCHM just blew me away. I've also tried various other (paid >_

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Version 1.4.3
gunterb Member IconReview+0

Simple, fast, works perfectly

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Version 1.4.3
Tuyen Nguyen Member IconReview+0
Tuyen Nguyen

Very good, everyone should have it.

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Version 1.4.3
GabLeRoux Member IconReview+0

Nive free app, a must for readers.
Only con: Saving to pdf won't keep index/table of content of file.

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Version 1.4.3
Toby Fernsler Member IconComment+0
Toby Fernsler

ichm crashes on startup for me, with the following error report:
Process: iChm [44757]
Path: /Applications/iChm.app/Contents/MacOS/iChm
Identifier: com.robinlu.iChm
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: launchd [143]

Interval Since Last Report: 18481365 sec
Crashes Since Last Report: 676
Per-App Interval Since Last Report: 0 sec
Per-App Crashes Since Last Report: 4

Date/Time: 2011-09-07 16:07:41.901 -0600
OS Version: Mac OS X 10.5.8 (9L30)
Report Version: 6
Anonymous UUID: 689DC205-0A32-4661-A87B-99F746FA4760

Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 0

Dyld Error Message:
Library not loaded: /usr/lib/libcrypto.0.9.8.dylib
Referenced from: /Applications/iChm.app/Contents/MacOS/iChm
Reason: image not found

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Version 1.4.3
John-2011 Member IconReview+0

Best chm viewer on MAC. Support chinese very well and open file super fast.

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Version 1.4.3
centzon Member IconReview+3

Works flawlessly, and quickly. I for one will be dropping a few $$ the developers way for the effort gone into this.

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Version 1.4.2
chaseerry Member IconReview+0

Amazing. Used it to convert some useless .chm books into PDF. Thank you!

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Version 1.4.2
Ibeme Member IconComment+22

Great application, does exactly what it says it does, and does it well. In my opinion, best .chm reader available for OS X.

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Version 1.4.2
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Version 1.4.3
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Version 1.4.3
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Version 1.4.3
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Version 1.4.3
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Version 1.4.3
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Version 1.4.2
> 5 26


Current Version (1.x)


Downloads 172,214
Version Downloads 112,602
License Free
Date 04 Aug 2011
Platform OS X / PPC 32 / Intel 32
Price Free
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