.jls file: how to open it on Windows

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

About the format

Format

JTIP (JPEG Tiled Image Pyramid)

PRONOM identifier

fmt/149

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

• 
  IrfanView

  Fast and compact image viewer and converter

  Free 4.76 2.9M ↓
• 
  XnView MP

  Professional Image Viewer & Photo Management

  Proprietary 1.12.2.0 436.9K ↓
• X
  XnView

  Best Photo Viewer, Image Resizer & Batch Converter for Windows.

  Proprietary 2.52.7

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