FILE FORMAT GUIDE
What is a CHM file?
Microsoft’s compiled HTML help format containing linked topics, navigation, and supporting files. Use this guide to decide whether to keep CHM or convert it for a different workflow.
PRACTICAL OVERVIEW
Where CHM works well
CHM is a strong choice for packaging software documentation and searchable help into one file.
The right output depends on what must remain editable, how the file will be shared, and which application or device needs to open it.
FORMAT QUESTIONS
About CHM files
What is CHM best used for?
CHM works especially well for packaging software documentation and searchable help into one file.
What can change during conversion?
Scripts, frames, search indexes, and Windows Help behaviors do not translate fully to documents or e-books. Features that do not exist in the chosen output format cannot be carried across exactly.
Should I keep the original CHM file?
Yes. Keep the original until you have opened the result and checked its layout, quality, data, media tracks, or other important details.