HTTP Version Indicator

Name: HTTP Version Indicator
Rating: 5 (2 reviews)
Author: Patrick Dark

By: Patrick Dark

Adds a color-based indicator for the HTTP version of the top‐level document of a tab in the address bar.

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Features & Capabilities

Adds a color-based indicator for the HTTP version of the top‐level document of a tab in the address bar. Green indicates HTTP 3.0, cyan indicates HTTP 2.0, yellow indicates HTTP 1.1, orange indicates HTTP 1.0, and white indicates an unknown HTTP version.

The network.http.http3.enabled about:config preference must be enabled for Firefox to make HTTP 3.0 connections. Sites known to use HTTP 3.0 include Cloudflare, Facebook, Google, Google News, Google Translate, Instagram, Microsoft News, Windows Blogs, and YouTube as well as some Cloudflare-hosted sites that have apparently opted into the functionality, such as Android Police. Certain applications may block HTTP 3.0 connections in Firefox, such as Avast Free Antivirus.

Note that indicator icons will not appear on pages loaded via service workers unless the dom.serviceWorkers.enabled about:config preference is disabled. If that preference is disabled after one has already loaded such a page, one may need to bypass their browser cache by, for example, accessing the relevant page and pressing Ctrl+F5 to get the indicator icon to appear. Sites known to use service workers include Fastmail, Gmail, Mozilla Discourse, and Twitter.

Also note that a page must be loaded after the extension is enabled for indicator icons to appear.

Known Issues:

The indicator icon isn't displayed on some addons.mozilla.org pages.
The indicator icon background color is only optimized for Firefox's native dark theme and may appear excessively dark when paired with lighter themes.
The extension is only localized for English.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

2 Last updated: 2021-05-08

Version code:

5228608

Creation date:

2020-11-18

Risk:

Permissions:

http://*/*
https://*/*
webRequest

Size:

13.25KB

Email:

ht*****@patrick.dark.name

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Ranking

# 25,181 ▼ 798

Other rankings

#21 in version keyword 39 ▼ 2#27 in antivirus keyword 27 ▼ 1#210 in documentation keyword 43 ▼ 13#248 in document keyword 45 ▼ 13

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:

Patrick Dark

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/http-version-indicator/

Email:

ht*****@patrick.dark.name

User Reviews

by 天灭*****, 2025-04-14

by 退出*****, 2025-03-09

Way better then the alternatives, you can tell the version on one glace. Wish there was an option to toggle the style to something with numbers so it's more clear what version is used. Otherwise you have to remember the colors.

by RA*****, 2021-03-18

View all user reviews ›

Is HTTP Version Indicator 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.

HTTP Version Indicator 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.

HTTP Version Indicator has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

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