Web Files

Mozilla Firefox

by Mozilla · opens 60 file types
Cross-platform
AT A GLANCE
DeveloperMozilla
PlatformsCross-platform
Opens60 file types
Get it fromwww.mozilla.org
Download Mozilla Firefox

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60 file types verified
Last reviewed Oct 2026

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What is Mozilla Firefox?

Mozilla Firefox is one of the most popular Internet browsers available. According to specifications provided by producer, it uses 30% less memory than other competing browsers. Built-in privacy protection mechanisms, vast number of add-ons facilitating work with the program and above all – fast running, these are the basic characteristics of Mozilla. Pleasant for the eye interface and intuitive taskbar make every day web surfing a pleasure. New and highly dynamic engine of the browser enable effortless browsing of pages no matter if there are ten or a thousand of them opened.

Files Mozilla Firefox opens

60 formats
Raster Image Files
Plugin Files
Developer Files
Text Files
Backup Files
Video Files
Executable Files
Settings Files
Vector Image Files
System Files
Database Files

Click any badge for full per-format details - what it is, how to open it and how to convert it.

Download Mozilla Firefox

SOURCEwww.mozilla.orgofficial site - avoid third-party download portals
PLATFORMSCross-platform

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programs & formats

Files Mozilla Firefox opens most

1.JSONJavaScript Object Notation file
2.PARTPartial Download File
3.HTMHTML Web Page (8.3 "htm" spelling of html)
4.XPICross-Platform Installer (Mozilla add-on package)
5.CACHECache File (generic temporary cache)
6.HTMLHyperText Markup Language Web Page

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