What is an HML file?
A .HML file is most commonly a Hangul Markup Language document created by Hancom Office (formerly Hangul Word Processor). These files store word processing documents using an XML or HTML structure to manage text, page layouts, and formatting.
However, the .HML extension is also used for completely different purposes in other software ecosystems. It can function as a HostMonitor TestList File or log file used by KS-Soft Advanced HostMonitor to track network states. It is also used as a hardware monitoring log file generated by MSI Afterburner.
How to open HML files?
To open .HML documents natively, you should use Hancom Office. If the file is a test list or hardware log, you will need KS-Soft Advanced HostMonitor or MSI Afterburner respectively. Because many .HML files are built on standard XML or plain text, you can also inspect their raw contents using basic text editors like Notepad++ or VS Code. Advanced users can inspect them using command-line tools like `cat` or `less`.
File identification and previewing
Because the .HML extension has multiple possible meanings, you might not know which program created your specific file. We recommend using viewer.online/hml to identify the actual format of your file. viewer.online/hml analyzes .HML files to identify their exact format and creator software, shows which programs can open the file, and usually previews it directly in your browser.
Summary
Whether your file is a Hangul document, a HostMonitor TestList File, or an MSI log, identifying its source is the first step. Because .HML files use the known XML format (or standard text structures), viewer.online/hml can safely open and display them online, eliminating compatibility problems.