There are 9 other file types using
the 1 file extension!

empty icon.1 - Unix unformatted manual page

empty icon.1 - Inno Setup binary data

empty icon.1 - Pro/ENGINEER backup file

empty icon.1 - GNU Screen log

empty icon.1 - Stuffit archive file

empty icon.1 - Super Nintendo split ROM image

empty icon.1 - The File Splitter split file

1 icon.1 - AIM AOL Instant Messenger file

empty icon.1 - Google Android cache

1 file extension - Mozilla Firefox cookie, image, popup permissions

What is 1 file? How to open 1 files?

File type specification:

Internet related file type icon Internet related file type

1 file icon: 1 filetype icon

File extension 1 is associated with the Mozilla Firefox and Netscape Navigator web browsers.

This type of .1 files is used for cookie, image, popup permissions files. It is used in earlier versions of these browsers.

Updated: April 17, 2024

The default software associated to open 1 file:

Firefox icon

Mozilla Corporation logoFirefox  Microsoft Windows software

Company or developer:
Mozilla Corporation

Firefox is very popular free open source web browser with many features.
Firefox supports tabbed browsing, private browsing, spell checking, incremental find, bookmarking etc. Other features can be added via extensions and add-ons, such as NoScript, Tab Mix Plus. FoxyTunes, Web Developer.

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:

Likely can only be accessed using Mozilla Firefox and maybe only in particular (older) versions.

How to convert:

As far as we could tell, no conversion for .1 files is possible.

List of recommended software applications associated to the .1 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 1 file, edit 1 file, convert 1 file, view 1 file, play 1 file etc. (if exist software for corresponding action in's database).

Unspecified and all other actions for computer programs working with 1 file - Mozilla Firefox cookie, image, popup permissions

Click on the software link for more information about Firefox. Firefox uses 1 file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

Main software associated with 1 file by default:
Firefox small icon Firefox
Netscape Navigator small icon Netscape Navigator

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