Having problems opening a JS file?

We have programs that can open or convert your JS files.

Opening JS files

Did your computer fail to open a JS file? We explain what JS files are and recommend software that we know can open or convert your JS files.

What is a JS file?

Files containing the .js extension are most commonly associated with JavaScript files. These JS files contain JavaScript code that is used to execute instructions in a Web page that uses client-side scripting. The functions may include the validation of form fields, rollover images, drop-down menu creation and other functions.

The .js file extension is also used for JACOsub script files, JetScript output files, Netscape settings files and ECMAScript language files.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension JS

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the JS file format or software that uses files with the JS suffix, please do get in touch - we would love hearing from you.