HTTP/2 and SPDY indicator
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This extension is no longer available in the official store. Delisted on 2025-09-17.
Extension Actions
- Minor Policy Violation
- Removed Long Ago
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An indicator button for HTTP/2, SPDY and QUIC support by each website.
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.