Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Add-on icon

CheckMyHTTPS version history - 19 versions

CheckMyHTTPS by CheckMyHTTPS Team

Rated 4.4 out of 5
4.4 Stars out of 5
5
7
4
2
3
0
2
0
1
1
CheckMyHTTPS version history - 19 versions
  • 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 5.7.2

    Released 14 Sep 2025 - 58.35 kB
    Works with firefox 115.0 and later
    • Visual improvement of Options page
    • Handle the case of checking addons.mozilla.org's certificate which is not possible due to a safety feature where Firefox prevents its extensions from manipulating the extension store website
    • By default, the extension icon is icon.png, not unknown.png anymore.
    • Improved error handling messages
    • Reorganized and improved localization messages
    • Removed severalCertificates 'SC' case handling. It is now considered invalid.
    • Checking an IDN (Internationalized Domain Name) website is now considered valid (as long as both certificate fingerprints are equal).
    • Made the IDN warning notification clickable to redirect the user to wikipedia's IDN homograph attack page
    • Removed Warning status as severalCertificates and IDN cases are no longer considered warning

    Source code released under GNU General Public Licence v3.0 only

    Download Firefox and get the extension
    Download file
  • Older versions

    Version 5.7.1

    Released 4 Feb 2024 - 60.59 kB
    Works with firefox 79.0 and later
    5.7.1 - 2024-02-04
    - Fix loading of options on browser startup (custom server and public key)
    - Better error messages

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.7.0

    Released 31 Aug 2022 - 60.09 kB
    Works with firefox 79.0 and later

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.6.0

    Released 28 Jan 2022 - 56.84 kB
    Works with firefox 62.0 and later
    ## 5.6.0 - 2022-01-28
    - Add IP getter and call API with it, in order to avoid false negatives
    - Improved appearance of options

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.5.4

    Released 8 Jan 2022 - 56.55 kB
    Works with firefox 62.0 and later, android 62.0 to 68.*
    ## 5.5.4 - 2022-01-08
    - Certificate fingerprint update

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.5.3

    Released 6 Dec 2020 - 56.51 kB
    Works with firefox 62.0 and later, android 62.0 to 68.*

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.5.2

    Released 28 Jul 2020 - 56.52 kB
    Works with firefox 62.0 and later, android 62.0 to 68.*

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.5.1

    Released 25 May 2020 - 56.43 kB
    Works with firefox 57.0 and later, android 57.0 to 68.*

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.5

    Released 19 Jan 2020 - 71.94 kB
    Works with firefox 57.0 and later, android 57.0 to 68.*

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.4.1

    Released 27 Nov 2019 - 77.44 kB
    Works with firefox 57.0 and later, android 57.0 to 68.*

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.4.0

    Released 25 Aug 2019 - 77.43 kB
    Works with firefox 50.0 and later, android 62.0 to 68.*
    - Add the option to disable notifications

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.3.2

    Released 30 May 2019 - 77.57 kB
    Works with firefox 50.0 and later, android 62.0 to 68.*
    - Fix the error message when the check server is down.

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.3.1

    Released 6 May 2019 - 79.08 kB
    Works with firefox 50.0 and later, android 62.0 to 68.*
    - Fix a bug preventing the error message when checking the check server.

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.3.0

    Released 15 Mar 2019 - 75.25 kB
    Works with firefox 50.0 and later, android 50.0 to 68.*

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.2.1

    Released 1 Feb 2019 - 78.16 kB
    Works with firefox 57.0 and later, android 62.0 to 68.*
    - Fix SSL Pinning on Check Server.

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.2.0

    Released 30 Jan 2019 - 78.16 kB
    Works with firefox 57.0 and later, android 62.0 to 68.*
    - Support the WebExtension TLS API (the Python script is now optional on Firefox > 62).
    - Back on Firefox Mobile!
    - Improved tab management.

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.1.1

    Released 9 Nov 2018 - 69.88 kB
    Works with firefox 57.0 and later
    - Fix compatibility with Python 3.7.

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.1.0

    Released 8 Nov 2018 - 69.86 kB
    Works with firefox 57.0 and later
    - Add proxy support in Python script.
    - Increase timeout to 10sec.

    Source code released under GNU General Public Licence v3.0 only

    Download file
  • Version 5.0.0

    Released 6 May 2018 - 73.2 kB
    Works with firefox 57.0 and later
    - Migration to WebExtension!
    - Use a Python script to perform a check (pending the WebExtension TLS API).

    Source code released under GNU General Public Licence v3.0 only

    Download file
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike Licence v3.0 or any later version.