HTTP/2 and SPDY indicator icon

HTTP/2 and SPDY indicator

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Extension Delisted

This extension is no longer available in the official store. Delisted on 2025-09-17.

Extension Actions

CRX ID
mpbpobfflnpcgagjijhmgnchggcjblin
Status
  • Minor Policy Violation
  • Removed Long Ago
  • No Privacy Policy
Description from extension meta

An indicator button for HTTP/2, SPDY and QUIC support by each website.

Image from store
HTTP/2 and SPDY indicator
Description from store

HTTP/2 (based on Google's SPDY) makes the information exchange between browser and server significantly more performant. Websites and applications that upgrade their infrastructure to support them are at a clear advantage.

This extension shows a lightning icon in the address bar that's blue if the page is HTTP/2 enabled, green if the page is SPDY enabled, and gray if neither is available.

Currently it leverages the browser API for determining this, which relies on the protocol used for the initial page request.

**NEW in 1.0.0: support for latest Chrome, performance improvements, better icons!**
**NEW in 0.7.1: title and description improvements"**
**NEW in 0.7.0: added SPDY/5a1 support"**
**NEW in 0.6.0: added HTTP/2 icon [MATSUU Takuto]"**
**NEW in 0.5.0: added SPDY3.1 icon [MATSUU Takuto]"**
**NEW in 0.4.0: fix SPDY2 icon and added QUIC! [MATSUU Takuto]"**
**NEW in 0.3.0: version numbers for SPDY 2 and 3 in the icon [MATSUU Takuto]**
**NEW in 0.2.0: option to disable gray icon when SPDY is not enabled**

Latest reviews

Brian Gregory
Great. But how about showing HTTP/3 now that Chrome supports it?
Jakob Hirsch
gives deprecation warning in recent chrome versions because it's using loadTimes. Nice ext though.
yu liu
why i cannot see the red color, even when i open google and youtube? I have enable QUIC in my chrome. it always shows the blue color with http2 enabled. but i didn't find quic session
Matej Nastran
It'f fune, but unfortunately is doesn't work for one of my IDN domains.
Jie Dai
[Deprecation] chrome.loadTimes() is deprecated, instead use standardized API: nextHopProtocol in Navigation Timing 2. https://www.chromestatus.com/features/5637885046816768. (anonymous) @ content.js:4
Gabriel Millerd
please fix the load times issue
Ami Y.
Still works fine, but started throwing deprecated error in Chrome's console: [Deprecation] chrome.loadTimes() is deprecated, instead use standardized API: nextHopProtocol in Navigation Timing 2
Haiping Xiao
content.js:5 [Deprecation] chrome.loadTimes() is deprecated, instead use standardized API: nextHopProtocol in Navigation Timing 2. https://www.chromestatus.com/features/5637885046816768. has a waring in latest chrome, can you update it ?
Stefan H
nice extension. works properly!
Ghost Onekey
gj
Jovien Chia
Very nice and handy extension. Highly recommended to check whether your connection to a particular server is on which type of protocol.
Francesco De Francesco
Very useful
Tommy Lee
Good day! Ready to buy your extension at a good price. Or we can help you for monetizing of it. Contact me for details. [email protected] Skype: Tendy.Max
漠然
very goold
Jerry Liu
really handy stuff.
István ifj. Dankaházi
Please prepare Apple Safari!
ヤノヒデノブ
Vivaldiも対応してた!
Changhyeon Lim
Fantastic!
Jarmo Isotalo
Wonderful extension!
Michał Kwiatek
blue icon on dark theme doesn't look good
Александр Шишенко
Great tool, but latest update was not cool. A tiny icon in address bar is better (and less clutter-y) than a huge button.
Suresh Lamani
superb
Oleksandr Fradynskyi
Thank you!
Dead J. Dona
put icon back to address bar!!!!!!!!
Ken Tobias
Very nice except that clicking the icon is now broken for HTTP2/SPDY as the name has changed in chrome.
Hanxue Lee
Simply works
Yasin inat
Thank you.