.sif file: how to open it on Windows

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

About the format

Format

Canon SIF File

PRONOM identifier

fmt/1751

Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).

• 
  Subtitle Edit

  Subtitle Edit is a free and open source editor for video subtitles.

  Open source 5.3.0.0 96.1K ↓ ★ 14.7K
• 
  Notepad3

  Notepad like text editor based on the Scintilla source code.

  Free 7.26.602.1 84.4K ↓ ★ 6.7K

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