A js file extension is related to web browsers developed by Netscape and Mozilla. A js file stores settings.

There are 3 other file types using
the JS file extension!

js icon.js - JavaScript source code script [common]

empty icon.js - JACOsub script

empty icon.js - ECMAScript language data

Detailed description

Software that open js file

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JS file extension - Mozilla (Netscape) settings

What is js file? How to open js files?

File type specification:

Settings, options, themes or skins file type icon Settings, options, themes or skins file type

js file icon: js filetype icon

The js file extension is associated with the Netscape Navigator and later with Mozilla Firefox and Seamonkey web browsers for Microsoft Windows, OS X and Linux.

The js file stores configuration data used by older versions of these web browsers.

Mime types:
application/x-ns-proxy-autoconfig

This js file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Updated: February 22, 2019

The default software associated to open js file:

Netscape Navigator icon

AOL Inc. logoNetscape Navigator  Microsoft Windows software

Company or developer:
AOL Inc.

Netscape Navigator was multi-platform web browser popular in the 1990's. The project was discontinued in 2007. The last versions of Navigator was based on Firefox Gecko core.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .js file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of recommended software applications associated to the .js file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open js file, edit js file, convert js file, view js file, play js file etc. (if exist software for corresponding action in File-Extensions.org's database).

Settings file type for software that use js file - Mozilla (Netscape) settings

Programs supporting the exension js on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for settings js file action.

Microsoft Windows:

Main software associated with js file by default:
Netscape Navigator small icon Netscape Navigator
Other suggested software:
Firefox small icon Firefox
SeaMonkey small icon SeaMonkey

Apple macOS / Mac OS X:

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