Firefox 73

  1. Firefox 73 Tabs On Bottom
  2. Firefox 73 And 74
  3. Firefox 73 Features
  4. Firefox 73
  5. Mozilla Firefox 73.0.1

beta web browser

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Version 89.0 Beta 1 for Windows, English
114MB download / 401MB installed
Notes All Languages Antivirus Scan Details

Mozilla Firefox, Portable Edition Beta can run from a cloud folder, external drive, or local folder without installing into Windows. It's even better with the Platform for easy installs and automatic updates.

Also Available: Firefox Stable, Firefox ESR (Extended Support Release), Firefox Developer Edition, Firefox Nightly, Legacy versions

Mozilla Firefox will soon include a revised Referrer Policy to tighten up queries and better protect user information. From a report: Firefox 87, due to ship on March 23, will cut back on path and query string information from referrer headers 'to prevent sites from accidentally leaking sensitive user data.' In a blog post on Monday, developer.

Firefox was created by Dave Hyatt and Blake Ross as an experimental branch of the Mozilla browser, first released as Firefox 1.0 on November 9, 2004. Starting with version 5.0, a rapid release cycle was put into effect, resulting in a new major version release every six weeks. Mozilla Firefox® is a fast, full-featured web browser that's easy to use. It has lots of great features including popup-blocking, tabbed-browsing, integrated search, improved privacy features, automatic updating and more.

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Mozilla Firefox, Portable Edition Test are test versions of the popular Firefox web browser or test versions of the Gecko layout engine bundled with a Launcher as a portable app that are being made available for testing purposes only, and are intended for web application developers and our testing community. For everyday use, please use Mozilla Firefox, Portable Edition.


Chinese (Simplified)中文 (简体)Downloadb2435d31e9740e144a092da9cde2bbe0
Chinese (Traditional)正體中文 (繁體)Downloadfd935a6455035d07153463587c237acb
English (British)English (British)Download6c3b6f41d66557734f8dae0447dc325f
Hindi (India)हिन्दी (भारत)Downloadc124ab2a33c3bd8cd76db8e6f6d83338
IndonesianBahasa IndonesiaDownload32e966407528bf15b261d92cb3855b46
Portuguese (Brazilian)Português (do Brasil)Downloade0cc809eb03b5285900ea6ea1c9a6306
Portuguese (Portugal)Português (Europeu)Downloadd4572a52deba88b69de0b720e71c3d7c
Spanish (Spain)Español (de España)Download2ded250d1a2b56ae42b771f5f30d47bf
Spanish (International)Español (internacional)Downloade05005fc4653b14b13703fbbee289261

App Notes

The beta release will install alongside a standard Firefox Portable install in a FirefoxPortableTest directory. Note that will release one version for each major version (example: 78b1 but not 78b2). For updates within each major release, use the internal updater. From Mozilla: 'This is pre-release software: you may encounter compatibility problems with some websites and add-ons.'


Firefox 73 And 74

For help with this app, please see the following:


Firefox 73 Features

  • External: Publisher Support
  • Internet Support Forum

Download Details

Firefox 73

  • Publisher: Mozilla & (John T. Haller)
  • Date Updated: 2021-04-22
  • Date Added: 2014-11-10
  • System Requirements: Windows 7, 8, 10 & WINE
  • App License: Open Source (MPL/GPL/LPGL under Mozilla EULA)
  • Source: Firefox Beta, Launcher source included, Installer
  • MD5 Hash: acf306caaac5658c18679ef4504bdbd5 (English)
  • SHA256 Hash: 7192992e11e2c2de9fc0fb35393249a18b4d344cf6178ea82669e21cb39598c7 (English)

Mozilla Firefox 73.0.1

Mozilla®, Firefox® and the Firefox logo are registered trademarks of the Mozilla Foundation and are used under license.