IndicateTLS focuses on identifying which TLS protocol version a visited website uses. It is catalogued under Browser DevTools & extensions on PulseGate.

Who is IndicateTLS for?

IndicateTLS is an open-source project built for privacy-conscious Firefox users and web security learners.

Yes — IndicateTLS is open source under the Open Source license and free to use.

What platforms does IndicateTLS run on?

IndicateTLS runs on the web and embeddable surfaces.

Is IndicateTLS still active?

Unverified. IndicateTLS 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.

Who makes IndicateTLS?

IndicateTLS is developed by jannispinter.

How long has IndicateTLS been around?

IndicateTLS first shipped in 2019.

Is IndicateTLS open source?

Yes — IndicateTLS is open source under the Open Source license.

Back to the index

IndicateTLS

Name: IndicateTLS
Author: jannispinter

github.comBrowser DevTools & extensions

IndicateTLS is an open-source Mozilla Firefox extension that shows the TLS protocol version negotiated by websites you visit. It helps users inspect transport-security details directly in the browser.

Open SourceWebEmbeddable

Visit github.com

Overview

4 features

IndicateTLS is a Browser DevTools & extensions project. It focuses on identifying which TLS protocol version a visited website uses. It is built as an open-source project for privacy-conscious Firefox users and web security learners. The project is open source (Open Source). IndicateTLS is available on the web and embeddable surfaces.

jannispinter builds and maintains IndicateTLS, and it first shipped in 2019. Among its 4 catalogued features are TLS version display, browser toolbar indicator, and website security inspection.

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

TLS version display
Browser toolbar indicator
Website security inspection
Firefox integration

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed8 Sep · 21:27 UTC
IndicateTLS verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about IndicateTLS

What is IndicateTLS?: IndicateTLS focuses on identifying which TLS protocol version a visited website uses. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is IndicateTLS for?: IndicateTLS is an open-source project built for privacy-conscious Firefox users and web security learners.
Is IndicateTLS free?: Yes — IndicateTLS is open source under the Open Source license and free to use.
What platforms does IndicateTLS run on?: IndicateTLS runs on the web and embeddable surfaces.
Is IndicateTLS still active?: Unverified. IndicateTLS 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.
Who makes IndicateTLS?: IndicateTLS is developed by jannispinter.
How long has IndicateTLS been around?: IndicateTLS first shipped in 2019.
Is IndicateTLS open source?: Yes — IndicateTLS is open source under the Open Source license.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
First seen: 8 Sep 2026
Built for: privacy-conscious Firefox users and web security learners
Model: Open source
Solves: Identifying which TLS protocol version a visited website uses.

Registered as

Firefox Add-ons: indicatetls

Developer

jannispinter

Index record

Indexed: 8 Sep 2026
Lifecycle: Alive
First seen: Sep 2026
Last seen: 8 Sep 2026

Identity audit (13)

Slug: indicatetls-github-com
Lifecycle state recorded: 8 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 8 Sep 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
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: 8 Sep 2026
Canonical URL: https://github.com/jannispinter/indicatetls

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