What is HTTP Indicator?

HTTP Indicator focuses on identifying which modern HTTP protocol a website uses while browsing. It is catalogued under Browser DevTools & extensions on PulseGate.

Who is HTTP Indicator for?

HTTP Indicator is an open-source project built for web developers and technically minded browser users.

Is HTTP Indicator free?

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

What platforms does HTTP Indicator run on?

HTTP Indicator runs on the web and embeddable surfaces.

Is HTTP Indicator still active?

Unverified. HTTP Indicator 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 HTTP Indicator?

HTTP Indicator is developed by pd4d10.

When did HTTP Indicator launch?

HTTP Indicator first shipped in 2020.

Is HTTP Indicator open source?

Yes — HTTP Indicator is open source under the Open Source license.

Back to the index

HTTP Indicator

Name: HTTP Indicator
Author: pd4d10

github.comBrowser DevTools & extensions

HTTP Indicator is an open-source browser extension that displays whether the current website connection uses HTTP/2, QUIC, or HTTP/3. It is intended for developers and users who want to inspect modern web transport protocols directly in the browser.

Open SourceWebEmbeddable

Visit github.com

Overview

5 features

HTTP Indicator is a Browser DevTools & extensions project. It focuses on identifying which modern HTTP protocol a website uses while browsing. It is built as an open-source project for web developers and technically minded browser users. The project is open source (Open Source). It ships for the web and embeddable surfaces.

pd4d10 builds and maintains HTTP Indicator, and it first shipped in 2020. Key capabilities include HTTP/2 detection, QUIC detection, and HTTP/3 detection.

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

HTTP/2 detection
QUIC detection
HTTP/3 detection
Browser toolbar indicator
Connection inspection

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

Indexed10 Sep · 21:49 UTC
HTTP Indicator verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about HTTP Indicator

What is HTTP Indicator?: HTTP Indicator focuses on identifying which modern HTTP protocol a website uses while browsing. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is HTTP Indicator for?: HTTP Indicator is an open-source project built for web developers and technically minded browser users.
Is HTTP Indicator free?: Yes — HTTP Indicator is open source under the Open Source license and free to use.
What platforms does HTTP Indicator run on?: HTTP Indicator runs on the web and embeddable surfaces.
Is HTTP Indicator still active?: Unverified. HTTP Indicator 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 HTTP Indicator?: HTTP Indicator is developed by pd4d10.
When did HTTP Indicator launch?: HTTP Indicator first shipped in 2020.
Is HTTP Indicator open source?: Yes — HTTP Indicator is open source under the Open Source license.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
First seen: 10 Sep 2026
Built for: web developers and technically minded browser users
Model: Open source
Solves: Identifying which modern HTTP protocol a website uses while browsing.

Registered as

Firefox Add-ons: http-indicator

Developer

pd4d10

Index record

Indexed: 10 Sep 2026
Lifecycle: Alive
First seen: Sep 2026
Last seen: 10 Sep 2026

Identity audit (13)

Slug: http-indicator-github-com
Lifecycle state recorded: 10 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 10 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: 10 Sep 2026
Canonical URL: https://github.com/pd4d10/http-indicator

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