How do I set up the default CHM reader in Windows to highlight text? Is this even possible?

When I read ebooks I need to highlight some of the text and it's just not there in the default CHM program.

Or would I be better off looking for another CHM viewer? If that's the case I'm best up for something that would work on Windows, Linux and Mac if that's the alternative.


I just found Kchmviewer. It looks really good with:

  • Windows, Mac and Linux.
  • Easy navigation: ctrl + left or right arrow keys to navigate next or previous sections
  • Tabbed interface
  • Ability to change font size
  • Allows you to add your own persistent bookmarks
  • Excellent search even for files without and index
  • Highlights text just fine

I've installed it on Windows 7 64-bit and it works great:

enter image description here

  • where does it highlight the text -- I'm talking about permanent highlighting.
    – treecoder
    Sep 14 '11 at 11:10

There is a handy Firefox add-on called CHM Reader which allows you to open CHM files within Firefox:

enter image description here

To achieve the highlighting support you're after you can use TextMarker!, another useful add-on:

enter image description here

Of course, it will work on any platform with Firefox installed.

  • I couldn't figure out how to highlight text. Didnt find any help on that either. Can you tell me please?
    – n1kh1lp
    Jan 16 '10 at 17:07
  • You can highlighty simply with the mouse. Screenshot added for clarity.
    – John T
    Jan 16 '10 at 23:11
  • thanks to harrymc's comment to my post, i now assume zero4 is rather looking for some 'mark up' feature as you get it with some PDF viewers.
    – Molly7244
    Jan 16 '10 at 23:21
  • That sounds about right, I was going to say... the Windows one allows you to highlight the other way so that doesn't make sense. Answer Updated.
    – John T
    Jan 16 '10 at 23:49
  • quite cool, now if that could be made to stick (i.e. save as) ... :)
    – Molly7244
    Jan 16 '10 at 23:58

HelpExplorer is a full-featured help viewer for both Windows and Linux. One of its main advantages is 100% support of the WinHelp (.hlp), MS HTML Help 1.x (.chm) and MS Help 2.0 (.HxS) help file formats that are widely used in Windows, which lets you use the same online help files for cross-platform applications running under Linux and Windows. Another great advantage of Help Explorer Viewer is its easy integration into your applications.

enter image description here

There is a little problem, though. The program is officially shareware, but you can't really pay for it since the company seems to have vanished from the face of the earth and all links are dead. However, it does the job and works with all Windows versions, it doesn't expire, there's no nag screen and it can be made portable. I'm quite happy with it.

HelpExplorer also allows you to highlight (and copy) text and images:

enter image description here

  • does it support text highlighting? I need this when I read ebooks.
    – n1kh1lp
    Jan 16 '10 at 13:06
  • yes it does, added screenshot.
    – Molly7244
    Jan 16 '10 at 13:14
  • 3
    If that's called highlighting, then the default Windows viewer does it as well.
    – harrymc
    Jan 16 '10 at 15:19
  • The link you provide for HelpExplorer is broken, and the company home page (according to Google) is gone. Did company & product disappear?
    – sleske
    Apr 1 '10 at 23:05
  • @sleske try this link: download.cnet.com/Help-Explorer-Viewer/…
    – blizpasta
    Dec 22 '10 at 1:49

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