.phm file: how to open it on Windows

2 Windows apps register the .phm extension. Install one of them to open the file with a double-click.

• 
  qView

  An image viewer designed with minimalism and usability in mind.

  Open source 7.1 ★ 3.7K
• 
  DirectX Texture Converter

  This DirectXTex sample is an implementation of the texconv command-line texture utility from the legacy DirectX SDK utilizing DirectXTex rather than D3DX.

  Open source 2026.5.7 ★ 2.2K

Related guide: Change the default app for a file type in Windows