Open mht files on a Mac

How to open mht files using Firefox on a MAC

Launch Firefox

Go to Tools – Add-ons

In search window type unmht

  • Hit Enter key
  • Your window will look like this:

  • Select Install next to UnMHT

After install completes screen will look like this:

  • Quit and restart Firefox
  • Go to File – Open File

Navigate to Downloads directory

  • Select appropriate .mht file
  • Click Open (bottom right)

Going forward follow these steps:

  • Launch Firefox
  • File – Open File

Navigate to download folder

Select and open desired file


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