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[whatwg] Arithmetic coded JPEGs

From: Evgeny Vrublevsky <evgeny.vrublevsky@gmail.com>
Date: Wed, 30 Nov 2016 17:34:20 +0300
Message-ID: <CABvhtWsYUzLovGvWf+WM7z5V4bXG245KzzBE44PXRFjOUa9isw@mail.gmail.com>
To: whatwg@whatwg.org

I'm writing about arithmetic coded JPEG support. Historically, it wasn't
supported by browsers due patents. But all of these patents are expired
several years ago, and modern libjpeg, libjpeg-turbo and mozjpeg have
optional support of the arithmetic coding.

Arithmetic coded JPEG support will allow us to recompress all existing
JPEGs losslessly, saving 10-20% of size. I've provided some examples here:

Similar ticket exists also in the Mozilla's Bugzilla:
https://bugzilla.mozilla.org/show_bug.cgi?id=680385#c17 . Now, I'm just
following this direction from the ticket:
> For now, the right place to go to move forward with this is on the
standards mailing lists, not in this bug.

Unfortunately, browsers still don't support arithmetic JPEG officially. Is
this a right place to start a discussion if it is possible to change it?

Best regards, Evgeny
Received on Wednesday, 30 November 2016 14:34:53 UTC

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