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Re: svg degrades to gif/jpg

From: Vadim Plessky <lucy-ples@mtu-net.ru>
Date: Thu, 20 Dec 2001 15:11:40 +0000
Message-Id: <200112201230.fBKCU8H06881@post.cnt.ru>
To: Masayasu Ishikawa <mimasa@w3.org>, w3c-wai-ig@w3.org
Cc: www-svg@w3.org
On Wednesday 19 December 2001 08:30, Masayasu Ishikawa wrote:
|   Charles McCathieNevile <charles@w3.org> wrote:
|   > I forget which draft the type was changed in, but I believe that it is
|   > using the +xml in order to allow recognition of xml data in various
|   > non-text MIME types.
|   The history was that "image/svg" had been used until WD-SVG-19991203 [2],
|   then it was changed to "image/svg-xml" in WD-SVG-20000303 [3] and was
|   changed again to "image/svg+xml" in CR-SVG-20001102 [4].
|   [2]http://www.w3.org/TR/1999/WD-SVG-19991203/intro.html#MIMEType
|   [3] http://www.w3.org/TR/2000/03/WD-SVG-20000303/intro.html#MIMEType
|   [4] http://www.w3.org/TR/2000/CR-SVG-20001102/intro.html#MIMEType

Dear Ishikawa-san,

Thanks a lot for clarification.
It's a pity that correct (according to [4]) mimetype for SVG is not listed in 
HTML4 specification. (I was making my assumption basing on HTML4 
Obviously, SVG was somewhat ignored in this W3C recommendation:
~ ~ ~
6.7 Content types (MIME types)

Note. A "media type" (defined in [RFC2045] and [RFC2046]) specifies the 
nature of a linked resource. This specification employs the term "content 
type" rather than "media type" in accordance with current usage. Furthermore, 
in this specification, "media type" may refer to the media where a user agent 
renders a document.

This type is represented in the DTD by  %ContentType;.

Content types are case-insensitive.

Examples of content types include "text/html", "image/png", "image/gif", 
"video/mpeg", "text/css", and "audio/basic". For the current list of 
registered MIME types, please consult [MIMETYPES].

List of registered content types (MIME types). Download a list of registered 
content types from ftp://ftp.isi.edu/in-notes/iana/assignments/media-types/.
~ ~ ~

Now I just wonder how many web masters in fact downloaded [MIMETYPES] from 
the URL above, and wether latest changes you have menetioned were reflected 
in that document.
Still I do not understand (and guess that many other people will not 
understand) why you have "image/png", "image/gif" but "image/svg+xml"
I personally find this quite confusing, and making transition from IMG to 
OBJECT tag rather difficult for people not reading *all* standards available 
on Internet (and this is just not possible to follow *all published 

I am cc'ing www-SVG list with hope that reasons for such practice can be 
clarified, and may be added somewehre as FAQ.


Vadim Plessky
http://kde2.newmail.ru  (English)
33 Window Decorations and 6 Widget Styles for KDE
KDE mini-Themes
Received on Thursday, 20 December 2001 07:30:45 UTC

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