.JSS File Extension

File Type:
JavaScript Style Sheet File

Having trouble opening .jss extension? Don't panic! This page explains what jss files are as well as suggests programs you may use to open jss files. You can download these programs through this page.

What is a JSS file?

Jss file extension has JavaScript Style Sheet file type, developed by JSS, which is associated with the "web files" category.

Files in the JavaScript Style Sheets format receive this extension. This format is a CSS language extension and supports multiple inheritance (standard CSS features only single inheritance). JSS files provide more flexibility when working with webpage styles. You have to parse and convert a JSS file to the .CSS format to use it with a webpage. 

To learn how you can open the given file, read the information below.

jss file icon
File Type:
JavaScript Style Sheet File
Web Files

How to open JSS file?

Double click the jss file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .jss extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the jss extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the jss file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open JSS files

  • Windows Windows
    • JSS JSS
  • MacOS MacOS
    • JSS JSS
  • Linux Linux
    • JSS JSS

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the jss file as well. Download Universal File Viewer for your OS.

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