Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 1.6.2
Released 22 Aug 2025 - 801.69 kBWorks with firefox 58.0 and later, android 120.0 and later- Improves verified logins by auto-focusing the first number slot and auto-submitting when the last is inputted
Source code released under MIT Licence
Download Firefox and get the extensionYou'll need Firefox to use this extensionOlder versions
Version 1.6.1
Released 27 Jul 2025 - 801.64 kBWorks with firefox 58.0 and later, android 120.0 and later- Fixed login script to adapt to the new QR code image source format
- Redesigned the options page
- Migrated to WXT for much cleaner dev
Source code released under MIT Licence
Version 1.6.0
Released 6 Jun 2025 - 795.25 kBWorks with firefox 58.0 and later, android 120.0 and later- You can now approve verified logins.
- Distributed device information better, allowing users to hold many more devices
Source code released under MIT Licence
Version 1.5.2
Released 9 Mar 2025 - 764.27 kBWorks with firefox 58.0 and later, android 120.0 and later- Fixed zero-click logins, again.
Source code released under MIT Licence
Version 1.5.1
Released 8 Mar 2025 - 764.28 kBWorks with firefox 58.0 and later, android 120.0 and later- Zero click logins now work for traditional login pages.
Source code released under MIT Licence
Version 1.5.0
Released 13 Feb 2025 - 783.9 kBWorks with firefox 58.0 and later, android 120.0 and later- Support for multiple accounts.
Source code released under MIT Licence
Version 1.4.3
Released 29 Sep 2024 - 783.46 kBWorks with firefox 58.0 and later, android 120.0 and later- Device information now claims this device is either an Android or iOS tablet in favor of identifying itself as an add-on.Source code released under MIT Licence
Version 1.4.2.2
Released 25 Sep 2024 - 782.24 kBWorks with firefox 58.0 and later, android 120.0 and later- Removing honest device information in favor of claiming this extension is an iOS device.Source code released under MIT Licence
Version 1.4.2.1
Released 4 Sep 2024 - 781.12 kBWorks with firefox 58.0 and later, android 120.0 and later- Hot fix for v1.4.2Source code released under MIT Licence
Version 1.4.2
Released 4 Sep 2024 - 781.12 kBWorks with firefox 58.0 and later, android 120.0 and later- Zero click login doesn't fire on passing through Duo prompt screen.Source code released under MIT Licence
Version 1.4.1
Released 28 Aug 2024 - 780.98 kBWorks with firefox 58.0 and later, android 120.0 and later- Renamed to Auto 2FA.Source code released under MIT Licence
Version 1.4.0.1
Released 24 Jun 2024 - 3.23 MBWorks with firefox 48.0 and later, android 120.0 and later- Works for Android.Source code released under MIT Licence
Version 1.4.0
Released 4 May 2024 - 3.23 MBWorks with firefox 48.0 and later- Introduced Zero, One, and Two click logins.Source code released under MIT Licence
Version 1.3.90
Released 11 Dec 2023 - 3.23 MBWorks with firefox 48.0 and later- Added Traditional Prompt instructions.
- Replaced Day / Night button with browser preferences.Source code released under MIT Licence
Version 1.3.81
Released 7 Dec 2023 - 1.37 MBWorks with firefox 48.0 and later- Fixed image loading issueSource code released under MIT Licence
Version 1.3.8
Released 7 Dec 2023 - 1.39 MBWorks with firefox 48.0 and later- Renamed to Duochrome
- Added scanning QR code supportSource code released under MIT Licence
Version 1.3.7
Released 26 Apr 2023 - 1.04 MBWorks with firefox 48.0 and later- Graphics changes on push request detailsSource code released under MIT Licence
Version 1.3.6
Released 25 Apr 2023 - 1.04 MBWorks with firefox 48.0 and later- Added day/night theme
- Made setup instructions more cohesive
- Minor graphics changesSource code released under MIT Licence
Version 1.3.5
Released 5 Nov 2022 - 1.01 MBWorks with firefox 48.0 and later- Added the ability to toggle one-click logins.
- Minor bug fixes.Source code released under MIT Licence
Version 1.3.4
Released 4 Nov 2022 - 1.01 MBWorks with firefox 48.0 and later- Fixed a bug where the success checkmark doesn't display.Source code released under MIT Licence
Version 1.3.3
Released 4 Nov 2022 - 1.01 MBWorks with firefox 48.0 and later- Removed Auto-Logins due to security concerns.
- Approving multiple push requests is no longer possible due to security concerns. Users are given a list of active push requests and must select theirs to weed out unauthorized requests.
- Approving a push request now reveals its details (IP address, location, etc.).Source code released under MIT Licence
Version 1.3.2
Released 29 Oct 2022 - 1.02 MBWorks with firefox 48.0 and later- Added a warning about Auto-Logins in settings that it may not work for all organizations.
- Minor graphical changes.Source code released under MIT Licence
Version 1.3.1
Released 27 Oct 2022 - 1.02 MBWorks with firefox 48.0 and laterv1.3.1
- Added Automatic Logins.
DuOSU will detect when you're on the login page and will attempt to log you in.
- Minor bug fixes.Source code released under MIT Licence
Version 1.1.0
Released 26 Oct 2022 - 474.5 kBWorks with firefox 48.0 and laterSource code released under MIT Licence