CertBadger

Name: CertBadger
Author: Chase Campbell

By: Chase Campbell

Displays a badge for TLS/SSL certificates expiring soon.

Download

Install

Features & Capabilities

CertBadger can help website owners and security enthusiasts stay up-to-date on certificate renewals.

It stays silent in the toolbar during normal browsing, but if it detects a certificate will soon expire, a yellow badge will be displayed at the top-right corner of the icon. Clicking the icon will show you which certificate(s) will expire soon.

You can also customize how many days before expiration CertBadger should alert you for each domain, under the "Options" tab via Firefox menu -> "Add-ons" -> "CertBadger".

To submit bug reports or feature requests, please create or vote on an issue on https://github.com/chasecampbell26/cert-badger/issues.

If you can write HTML or Javascript, you are also welcome to send pull requests to the same repository. Let's eliminate cert expiration outages together!

Note: websites using service workers, such as twitter.com, are currently not supported.

Explanation for permissions: "Access your data for all websites": CertBadger needs to examine all visited HTTPS websites' certificates to find out which ones need to be alerted on. Since Firefox does not allow changing/narrowing this permission to specific domains post-install, CertBadger can only request for all websites. CertBadger does not send any data over the Internet.

User Growth & Download Statistics

Add-on

By:

Chase Campbell

Daily users:

Version:

0.1.1 Last updated: 2020-02-23

Version code:

4967809

Creation date:

2020-02-18

Risk:

Permissions:

Size:

22.40KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Ranking

# 100,988 ▲ 1,415

Other rankings

#91 in badge keyword 9

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Chase Campbell

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/certbadger/

Website:

https://github.com/chasecampbell26/cert-badger

Is CertBadger Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

CertBadger requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

CertBadger is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****