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Google Chrome Browser to implement 'HTML5 by Default'

by Mark Tyson on 16 May 2016, 14:31

Tags: Google (NASDAQ:GOOG)

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Google aims to phase out Flash multimedia support in the Chrome browser by the end of the year and implement 'HTML5 by Default'. The move will leave only 10 sites worldwide which will show Flash multimedia by default. To see flash content on other sites users will have to interact with a warning prompt to enable the plugin either "once, always, or never ask again".

Anthony Laforge, Google's technical lead on Chrome, posted on the Chromium-dev discussion forum about the change in policy. Laforge wrote that he is targeting Q4 this year for the 'HTML5 by Default' changes to be in place, and summarised the changes as follows:

Navigator.Plugins() and Navigator.MimeTypes() will only report the presence of Flash Player if the user has indicated that the domain should execute Flash, or if the site is in one of the Top 10 domains using Flash.

If any site offers an HTML 5 experience, that content will be offered by default. Other sites with Flash elements and to HTML substitutes will generate the "once, always, or never ask again" UI prompts. Enterprises will be able to go with the Chrome flow or simply disable this 'HTML5 by Default' feature by selecting the 'Always run Flash content' option.

The following sites are the world's top 10, according to Google Chrome metrics, and will not be subject to the 'HTML5 by Default' change in policy. Laforge says that any of these sites can get themselves off the 'whitelist', if so desired, and these whitelist positions and eligibility will be reviewed throughout the year.


The reasons behind the attempted banishing of Flash are well documented in tech news reports, including several on HEXUS (we most recently covered the Cerber drive-by ransomware vulnerability). Flash isn't just seemingly particularly vulnerable to hackers but it is also said to be slower to load and to consume more of your device's power.

Google's Laforge promises to work closely with Adobe and other software companies with a particular focus on web gaming as these experiences are often still Flash orientated.

HEXUS Forums :: 6 Comments

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when Youtube moved to HTML5 I also moved. #
I've got to wonder why youtube is on the white list? Shouldn't google have forced everyone using their browser on their site over? Its not like HTML5 will struggle on it…
Next stop, Java RE
Browser plugins that enable code execution (JS, Java, flash etc) should be run in a sandbox where:
1) interaction with the browser/OS/files are limited and support blank responses and null writes (gatekeeper resticts access but doesn't freeze/crash plugin when access is denied);
2) CPU can be restricted, rationed or delayed without blocking the rest of the page from rendering;
3) Memory access is limited to itself and illegal memory access is blocked.

Browsers should also try to reduce the frequent re-render requests that occur when switchings applications, resizing and changing tabs. Please delay or allow me to fully refresh only when I ask for it.