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Is there a list of "enable-able" features?

Discussion of features in Seamonkey
Pim

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Post Posted May 4th, 2015, 11:59 pm

Lots of features in SeaMonkey are hidden behind about:config settings. For example, the browser only supports the new html5 <picture> element if you set the dom.image.picture.enabled setting to true.

Now my question is, is there a list somewhere of all settings like that? I want to be able to enable all the cutting edge features that I can.

My goal is to score as high as possible on the https://html5test.com/ website.
With a new profile, SeaMonkey 2.33.1 scores 431 points, but by setting a number of settings with "enabled" in their names to true, I managed to crank the score up to 499.
The problem, however, is that I don't know what the vast majority of these settings does, so I don't dare enable them in my main profile!
Groetjes, Pim

Philip Chee

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Post Posted May 5th, 2015, 7:00 am

There is no definitive list since there is no centralized control. Developers working on a particular feature e.g. <picture> may want to hide their in-development code behind a pref until it's production ready. Or they may not. It's up to them modulo their managers/module owners.

Phil

Pim

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Post Posted July 15th, 2015, 1:30 pm

Many of these things are working already; it's just a case of the browser being overly cautious and not enabling them by default.
For people who don't mind tinkering with their about:config a bit, here is a list. First, if you inherited the profile from an older version of the browser, it's possible that some settings have the previous values, which don't match those of a new profile. So check these first.

Code: Select all
about:config entry                 what it does                  html5test score
--------------------------------------------------------------------------------
dom.image.picture.enabled          <picture>                                 10
dom.image.srcset.enabled           srcset attr                                5
geo.enabled                        location-aware browsing ¹                 15
layout.css.ruby.enabled            ruby annotation                            3
dom.gamepad.enabled                gamepad control ²                          2

¹ Note that this enables websites to request your physical location, which may constitute a privacy risk. You are always asked for confirmation; the website can't retrieve your info without your permission. Then again, if Google or Facebook find out where you are, who knows where their knowledge might end up. Use with care.

² Gamepad control seems to exist only on some platforms; this scores 2 on some machines, while it doesn't on others (using the same SeaMonkey version), even hough none of the machines actually have game pads.

If you've done this (or if you have created a fresh profile), SeaMonkey 2.35 will score 467 on the html5 test site.

Then there are these settings you can enable, which will also increase the score, even if you might not need them during normal browsing.

Code: Select all
about:config entry                 what it does                  html5test score
--------------------------------------------------------------------------------
canvas.hitregions.enabled          Hit testing support                        1
dom.w3c_pointer_events.enabled     Pointer Events                             5       
media.track.enabled                Audio/Video track selection                4
media.webspeech.synth.enabled      Speech Synthesis ³                         2
media.webspeech.recognition.enable Speech Recognition                         3

bringing the score up to 477.

³ Speech Synthesis doesn't seem to work in all circumstances. Need some more testing.

And some settings that I don't know enough of to say if they are security or privacy hazards. If you want to use these, note that you do so at your own risk. I am not responsible for what happens to your computer.

Code: Select all
about:config entry                 what it does                  html5test score
--------------------------------------------------------------------------------
dom.experimental_forms             <input type="date/time">                   8
dom.fetch.enabled                  Fetch API                                  6⁴
dom.serviceWorkers.enabled         Service Workers                           10
dom.webcomponents.enabled          Custom elements, Shadow DOM, HTML imports  8
media.mediasource.enabled,      ⎫
media.mediasource.youtubeonly,  ⎬  Mediasource ⁵                              2
media.mediasource.whitelist     ⎭

⁴ Only on http://beta.html5test.com; not yet implemented on the main site

⁵ media.mediasource.youtubeonly and/or media.mediasource.whitelist (which may or may not both be present) need to be false in order for media.mediasource.enabled to be recognised on the html5test site.

The score will then be a whopping 505!

But like I said, the score seems to depend on the hardware used. In a virtual machine that doesn't have hardware 3D support, the score is only 412 by default and 485 at the highest. So your mileage may vary!
Last edited by Pim on September 5th, 2015, 5:15 am, edited 1 time in total.
Groetjes, Pim

Michael REMY
 
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Post Posted August 8th, 2015, 12:30 am

it would be very good and very handfull to have a view, 2 colum side by side of the feature enabled, and the feature desable.

and (main need) a colum date header of activation (or desactivation).
so every user could have a super view of features history changes.

Pim

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Post Posted August 28th, 2015, 1:33 pm

You mean the date the user last flipped switches, or the date the feature was added to SeaMonkey?
Groetjes, Pim

Thomas.Weber
 
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Post Posted January 18th, 2017, 7:19 am

btw, shouldn't be "Speech Recognition" YES in html5test? i always get a NO.

media.webspeech.recognition.enable;true
media.webspeech.synth.enabled;true

Pim

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Post Posted January 18th, 2017, 12:28 pm

Speech recognition once worked, at least according to HTML5test, but it no longer does. Apparently they're testing in a different way now.
There are other things that do work now though; maybe I should update this post.
Groetjes, Pim

Thomas.Weber
 
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Post Posted January 18th, 2017, 2:33 pm

i can't get over 516 points currently.

sure, it this is more a fun thing than anything else...

Pim

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Post Posted January 19th, 2017, 12:44 pm

Are you using special extra software? Many of the items on that site seem to require stuff such as specialised video drivers installed.
Groetjes, Pim

Thomas.Weber
 
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Post Posted January 20th, 2017, 5:56 am

what site? https://html5test.com ?

nope, this is on a crappy i5 notebook with nothing special at all. i don't think firefox itself has to offer much more currently.
516 points is with firefox 52, btw. you won't get there with older versions.

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