.otf file: how to open it on Windows

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

About the format

Format

OpenType font

MIME type

font/otf

PRONOM identifier

fmt/520

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

• 
  FontForge

  FontForge is a free and open source font editor brought to you by a community of fellow type lovers.

  Open source 20251009 19.3K ↓ ★ 8K
• H
  High-Logic FontCreator

  A popular, inspiring, and intuitive font editor built to help you create amazing new fonts and edit existing fonts.

  Proprietary 16.0.0.3082

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