Firefox Developer Edition Offline Installer

Name: Firefox Developer Edition
Availability: InStock
Author: Mozilla

Standalone installer · Full setup · Offline installer free download for Windows/macOS/Linux

Browsers · vLatest Developer Edition · Open Source

Powerful browser tailored for developers, designed to streamline their workflow and

Link checked against Mozilla's official domain on June 14, 2026 (automated check; catalog maintained by Avinash Verma, Editor).

License: Open Source

Size: 70 MB

Platforms: Windows macOS Linux

Updated: Jun 14, 2026

Quick answer: downloading Firefox Developer Edition

Firefox Developer Edition is a Open Source web browser for Windows/macOS/Linux from Mozilla. Its official offline (standalone) installer is published as a direct download and installs without an internet connection. Always download from the official source (mozilla.org) — we link there directly and never host or modify the file.

Firefox Developer Edition Trust & Verification

External authoritative sources that identify and verify Firefox Developer Edition.

Wikipedia article

Firefox Developer Edition Offline Installer Downloads

Verified installer files, platform packages, store pages, and browser plugins when available.

Platform	Build	Architecture	Package	Download	Notes
Windows	ARM64 Firefox Developer Edition for Windows (ARM64)	ARM64	Official site	Download	Official direct file package from Mozilla
Windows	Standard package Firefox Developer Edition for Windows (64-bit)	64-bit	Official site	Download	Official direct file package from Mozilla
Windows	Standard package Firefox Developer Edition Windows 64-bit File	64-bit	Official site	Download	Official direct package from the publisher download page
Windows	Standard package Firefox Developer Edition Windows 32-bit File	32-bit	Official site	Download	Official direct package from the publisher download page
Windows	Standard package Firefox Developer Edition Windows 32-bit File	32-bit	Official site	Download	Official direct package from the publisher download page
macOS	Standard package Firefox Developer Edition for macOS	Publisher not specified	Official site	Download	Official direct file package from Mozilla
Linux	Standard package Firefox Developer Edition Linux ARM64 File	ARM64	Official site	Download	Official direct package from the publisher download page
Linux	Standard package Firefox Developer Edition Linux 64-bit File	64-bit	Official site	Download	Official direct package from the publisher download page
Android	Google Play Firefox Developer Edition Google Play	Not applicable	Store	Download	Official Google Play listing linked from the publisher site
iOS	App Store Firefox Developer Edition Apple App Store	Not applicable	Store	Download	Official Apple App Store listing linked from the publisher site

Direct installer links are shown only when verified. Store and browser extension rows open the publisher-controlled official destination.

Source: official offline / standalone installer — the verified file above installs without an internet connection.

We do not host software files on our servers. All download links point to the official developer source or a trusted, verified mirror.

Firefox Developer Edition Overview

Firefox Developer Edition is a version of Mozilla Firefox built for web developers, based on the Beta channel so it previews features ahead of the stable release. It ships with developer-focused defaults and tools enabled out of the box — an advanced inspector, a powerful CSS grid and flexbox inspector, a JavaScript debugger, and tooling for testing across browsers — along with a distinct theme so it can run side by side with regular Firefox. It uses the Gecko engine and supports standard Firefox extensions. It also includes Responsive Design Mode for testing layouts at different screen sizes, a built-in screenshot tool, and a dark developer theme by default, and it lets you experiment with settings that are off by default in stable Firefox. The full offline installer is convenient for setting up developer workstations consistently. The link on this page goes to Mozilla's official Firefox Developer Edition download.

Firefox Developer Edition Preview

Firefox Developer Edition Browsers preview card — Firefox Developer Edition — Browsers

Lead card by OfflineInstallerSetup. Logo and screenshots from the publisher's official sources and Wikipedia / Wikimedia Commons under their respective licenses.

Firefox Developer Edition Offline Installer Key Features

Based on the Firefox Beta channel — preview platform features early
Advanced developer tools: inspector, CSS grid/flexbox tools, and debugger
Distinct profile and theme so it runs alongside stable Firefox
Gecko engine with standard Firefox extension support
Settings tuned for development and debugging by default

Firefox Developer Edition Standalone Installer System Requirements

Baseline requirements to run the current Firefox Developer Edition release:

Operating System: Windows 10/11 (64-bit)
Memory (RAM): 2 GB minimum, 4 GB recommended
Disk Space: 500 MB free space
Processor: 1 GHz or faster (64-bit)

How to Install Firefox Developer Edition

Follow these steps to install Firefox Developer Edition offline on your PC:

1
Download the Firefox Developer Edition offline installer from the official source below.
2
Choose the installation directory or proceed with the default location.
3
Launch Firefox Developer Edition — installation is complete.