Who is Certificate Trust for?

Certificate Trust is an open-source project built for firefox users and security-conscious web users.

What platforms does Certificate Trust run on?

Certificate Trust runs on the web and embeddable surfaces.

Is Certificate Trust still active?

Unverified. Certificate Trust has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to Certificate Trust?

Similar projects tracked by PulseGate include Check Trustpilot, TLS Check, and Corporate certificate detector.

Who develops Certificate Trust?

Certificate Trust is developed by devmni.

How long has Certificate Trust been around?

Certificate Trust first shipped in 2025.

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Certificate Trust

Name: Certificate Trust
Author: devmni

mozilla.orgBrowser DevTools & extensions

Certificate Trust is a Firefox extension that uses a colored browser icon to classify the current website’s HTTPS certificate as Mozilla-trusted, locally trusted, self-signed, or HTTP. It helps users identify corporate proxies and other certificate trust differences that Firefox’s standard lock indicator may not reveal.

Open SourceWebEmbeddable

Visit mozilla.org

Overview

6 features

Certificate Trust sits in PulseGate's Browser DevTools & extensions category. It focuses on identifying whether a website’s TLS certificate is trusted by Mozilla, the local computer, or neither. Certificate Trust is an open-source project aimed at firefox users and security-conscious web users. Certificate Trust is open source under the Open Source license. It runs on the web and embeddable surfaces.

Behind Certificate Trust is devmni, and it first shipped in 2025. Among its 6 catalogued features are certificate status icon, TLS trust classification, and proxy detection. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Certificate status icon
TLS trust classification
Proxy detection
Self-signed detection
HTTP detection
Browser tab access

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed11 Sep · 17:28 UTC
Certificate Trust verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Certificate Trust

What does Certificate Trust do?: Certificate Trust focuses on identifying whether a website’s TLS certificate is trusted by Mozilla, the local computer, or neither. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is Certificate Trust for?: Certificate Trust is an open-source project built for firefox users and security-conscious web users.
Does Certificate Trust have a free plan?: Yes — Certificate Trust is open source under the Open Source license and free to use.
What platforms does Certificate Trust run on?: Certificate Trust runs on the web and embeddable surfaces.
Is Certificate Trust still active?: Unverified. Certificate Trust has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to Certificate Trust?: Similar projects tracked by PulseGate include Check Trustpilot, TLS Check, and Corporate certificate detector.Check Trustpilot TLS Check Corporate certificate detector
Who develops Certificate Trust?: Certificate Trust is developed by devmni.
How long has Certificate Trust been around?: Certificate Trust first shipped in 2025.

At a glance

Pricing: Open Source
Platforms: Web
License: Open Source
Built for: Firefox users and security-conscious web users
Model: Open source
Solves: Identifying whether a website’s TLS certificate is trusted by Mozilla, the local computer, or neither.

Registered as

Firefox Add-ons: certificate-trust

Developer

devmni

Index record

Indexed: 11 Sep 2026
Lifecycle: Alive
Last seen: 11 Sep 2026

Identity audit (13)

Slug: certificate-trust-mozilla-org
Lifecycle state recorded: 11 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 11 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 11 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/certificate-trust

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