How to edit CHM files directly?

CHM is a Microsoft HTML help format. Actually, a CHM file is a compressed html file. Although more and more e-books are using PDF as the format, there are still many e-books from CHM.

When you are reading a CHM e-book, you might want to annotate it like annotating a PDF document, but Microsoft only provided a simple viewer to read this type of file, it cannot be used to annotate your e-books. How to annotate your CHM eBooks? Perhaps there are some CHM authoring tools that can do that, but they are too expensive for most people and these tools actually are for e-book authors.

There are also some inexpensive ways to do it. For example, you can download Microsoft HTML Help Workshop from Microsoft official site, which is an official Microsoft CHM authoring tool, you can not only use it to create your own chm documents, but also provide a function to convert a CHM file to standard. HTML files. You can edit these files with html tools. In this way, you have to rearrange the content yourself, because these decompiled files do not contain the files needed to compile them into the original CHM file. The decompilation can only extract the html files from this chm file, not including the project file, content file, and index file, etc.

In fact, 7-zip can also decompile chm files. With the 7-zip, you can not only get the html files, but also the chm project file, index file, and content file. Then after editing these files as you like, you can use Help Workshop to compile these files into a chm file. When you open the e-book output file, you will see the changes you made.

If you like the PDF format and have purchased a PDF annotation tool, you can convert it to a PDF document. Many tools, free or paid, can help you do just that. Then you need some tools to edit your PDF document. Adobe Acrobat provides powerful features for annotating PDF documents, but it is expensive. You can also try some third-party tools, which also provide editing functions for editing PDF files. But some people don’t like the converted page layout of a CHM file.

The above ways to annotate your CHM eBooks can be too tedious, is there a way to annotate CHM eBooks directly? Yes, with Beyond CHM, there is no need to convert the CHM eBook to any other file to annotate. You can annotate CHM e-books directly using Beyond CHM.

Beyond CHM is a powerful chm reader and editor that runs under MS Windows environment. Allows user to open multiple tabs at the same time. Using it, users can edit chm documents including highlighting text, changing foreground color of text, removing content, adding new items, etc., all changes can be persistently saved. Furthermore, the user can switch Beyond CHM between reader mode and editor mode easily. In read mode, users can zoom in and out chm pages freely. Beyond CHM is a good replacement for Microsoft HTML Help Executable.

If you want to annotate CHM e-books, you will find it to be a really useful tool.