File Extension Library


.LSS File Extension

  • Developer by: IBM
  • Category: Source code and script Files

What are .LSS files and how to open them?

Can't open .LSS file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .LSS file.

What is a .LSS file extension?

.LSS file extension is created by IBM. .LSS has been classified as Source code and script Files.

.LSS is LotusScript source code file

File extension lss is associated with Lotus Notes, a multi-platform client for Lotus Domino and Lotus Notes suites, developed by IBM.

An lss file contains source code scripts written in LotuScript programming language used by Lotus Notes. LSS is one of the internal formats used by Domino Designer.

Note: Rarely lss file extension is also used for LSS16 Format Image, a Linux splash screen format.


How to open:

It seems that .lss files can probably be viewed in any text editor. There is also a program called Lotus Domino Designer, which might be able to work with *.lss files.

How to convert:

A conversion of any kind seems to be unlikely, however, as this file type can be edited using

How to fix problems with .LSS files

  1. You need to update the application that you normally use to open .LSS files. Only the latest version of the software supports the current .LSS file format
  2. You need to check the .LSS file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)