MasterCook layout
File type: Settings, options, themes or skins file
Files with lop file extension are layout files used by MasterCook.
A lop file stores layout settings for the recipe-management software.
File type category:
Settings, options, themes or skins file
Date updated: October 12, 2026
MasterCook is recipe-management software for Microsoft Windows and macOS (OS X) that lets users store and manage cooking recipes. The lop file extension identifies a MasterCook layout file.
The lop file contains layout settings used by MasterCook. It is a supporting configuration file rather than a recipe file or a general-purpose document.
Open the file with MasterCook on Microsoft Windows or macOS (OS X). MasterCook normally uses its layout files as part of the application, so opening the file directly may not display readable content.
A lop file is a MasterCook layout and does not contain recipe data intended for conversion. It has no useful standalone conversion to another format; retain it for use with MasterCook.
Software applications that can open lop files:
Microsoft Windows
Software apps that create lop files:
Microsoft Windows
Software apps that manage or store settings in lop files:
Microsoft Windows
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