Extract text from Rights-managed HTML documents (RMH)
To convert RMH Protected documents to another format, you need Microsoft Purview or other Encoded software.
To convert other file formats to the "DRM Protected HTML" file type, you need software like Microsoft Purview or a similar tool.
The .RMH file extension stands for Rights-Managed HTML Document. It is a proprietary file format developed by Microsoft to apply Digital Rights Management (DRM) to standard web pages. These files are typically used in corporate environments to secure sensitive information, preventing unauthorized users from copying, pasting, printing, or forwarding the HTML content.
Historically, .RMH files were opened using the Rights Management Add-on for Internet Explorer. Today, accessing them often requires the Microsoft Purview Information Protection client or an authenticated Microsoft ecosystem tool.
The primary disadvantage of the .RMH format is its severe restrictiveness. Because it is proprietary and heavily encrypted, you cannot simply open it in modern web browsers like Chrome or Safari. Users often need to convert these files to standard HTML, PDF, or TXT to share information with external clients or users on non-Windows platforms. However, standard online converters fail because the file is locked by DRM and tied to specific user credentials.
Because .RMH is a closed, proprietary format, it is exceptionally difficult to open or convert without proper authentication. Often, only the original software or authorized recipient can properly read or export the data. If our analysis detects a supported underlying or embedded format that is not fully encrypted, viewing or conversion may still be possible.
Convert.Guru analyzes your RMH file, detects the exact format, and lets you read the text inside.
Users also converted GLB, PNG and BMP files.
If you want to convert RMH file to TMP, TEMP, CACHE, LOG, BAK, OLD, NEW, PART, DOWNLOAD, CRDOWNLOAD, LOCK or PID, you can use Microsoft Purview or similar software from the "DRM-protected web content" category. In the File menu, look for Save As… or Export….
To convert DEVICE, CACHE, SOCK, SYMLINK, PID, MOUNT, FIFO, LOG, PIPE, TMP, JUNCTION or TEMP files to RMH, try Microsoft Purview or another comparable tool in the "DRM-protected web content" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our RMH converter.