Type name:
image
Subtype name:
svg+xml
Required parameters:
None.
Optional parameters:
charset
Same as application/xml media type, as specified in [rfc7303] or its successors.
Encoding considerations:
Same as for application/xml. See [rfc7303], section 3.2 or its successors.
Security considerations:
The results of the SVG working group's self assessment of security and privacy concerns is at https://github.com/w3c/svgwg/wiki/SVG-2-Security-&-Privacy-Review.
As with other XML types and as noted in [rfc7303] section 10, repeated expansion of maliciously constructed XML entities can be used to consume large amounts of memory, which may cause XML processors in constrained environments to fail.
Several SVG elements may cause arbitrary URIs to be referenced. In this case, the security issues of [rfc3986], section 7, should be considered.
In common with HTML, SVG documents may reference external media such as images, audio, video, style sheets, and scripting languages. Scripting languages are executable content. In this case, the security considerations in the Media Type registrations for those formats shall apply.
In addition, because of the extensibility features for SVG and of XML in general, it is possible that "image/svg+xml" may describe content that has security implications beyond those described here. However, if the processor follows only the normative semantics of the published specification, this content will be outside the SVG namespace and shall be ignored. Only in the case where the processor recognizes and processes the additional content, or where further processing of that content is dispatched to other processors, would security issues potentially arise. And in that case, they would fall outside the domain of this registration document.
Privacy considerations:
The results of the SVG working group's self assessment of security and privacy concerns is at https://github.com/w3c/svgwg/wiki/SVG-2-Security-&-Privacy-Review.
SVG's ¡®requiredExtensions¡¯ and ¡®systemLanguage¡¯ attributes may provide some opportunity for examining the configuration of a user agent's host environment. ¡®requiredExtensions¡¯ by determining whether custom extensions are supported by the user agent. ¡®systemLanguage¡¯ by determining the preference of one language relative to another.
Interoperability considerations:
The published specification describes processing semantics that dictate behavior that must be followed when dealing with, among other things, unrecognized elements and attributes, both in the SVG namespace and in other namespaces.
Because SVG is extensible, conformant "image/svg+xml" processors must expect that content received is well-formed XML, but it cannot be guaranteed that the content is valid to a particular DTD or Schema or that the processor will recognize all of the elements and attributes in the document.
SVG has a published Test Suite and associated implementation report showing which implementations passed which tests at the time of the report. This information is periodically updated as new tests are added or as implementations improve.
Published specification:
This media type registration is extracted from Appendix P of the SVG 1.1 specification .
Applications that use this media type:
SVG is used by Web browsers, often in conjunction with HTML; by mobile phones and digital cameras, as a format for interchange of graphical assets in desk top publishing, for industrial process visualization, display signage, and many other applications which require scalable static or interactive graphical capability.
Additional information:
Magic number(s):
File extension(s):
svg
Note that the extension 'svgz' is used as an alias for 'svg.gz' [rfc1952], i.e. octet streams of type image/svg+xml, subsequently compressed with gzip.
Macintosh file type code(s):
"svg " (all lowercase, with a space character as the fourth letter).
Note that the Macintosh file type code 'svgz' (all lowercase) is used as an alias for GZIP [rfc1952] compressed "svg ", i.e. octet streams of type image/svg+xml, subsequently compressed with gzip.
Macintosh Universal Type Identifier code:
org.w3c.svg conforms to public.image and to public.xml
Windows Clipboard Name:
"SVG Image"
Fragment Identifiers
For documents labeled as application/svg+xml, the fragment identifier notation is either Shorthand Pointers (formerly called barenames), the SVG-specific SVG Views syntax or a Media Fragment Identifier; all described in the fragment identifiers section of the SVG specification .
Person & email address to contact for further information:
Chris Lilley, Doug Schepers (member-svg-media-type&w3.org).
Intended usage:
COMMON
Restrictions on usage:
None
Author:
The SVG specification is a work product of the World Wide Web Consortium's SVG Working Group.
Change controller:
The W3C has change control over this specification. Presently we were in a very dark road, and at a point where it dropped suddenly between steep sides we halted in black shadow. A gleam of pale sand, a whisper of deep flowing waters, and a farther glimmer of more sands beyond them challenged our advance. We had come to a "grapevine ferry." The scow was on the other side, the water too shoal for the horses to swim, and the bottom, most likely, quicksand. Out of the blackness of the opposite shore came a soft, high-pitched, quavering, long-drawn, smothered moan of woe, the call of that snivelling little sinner the screech-owl. Ferry murmured to me to answer it and I sent the same faint horror-stricken tremolo back. Again it came to us, from not farther than one might toss his cap, and I followed Ferry down to the water's edge. The grapevine guy swayed at our side, we heard the scow slide from the sands, and in a few moments, moved by two videttes, it touched our shore. Soon we were across, the two videttes riding with us, and beyond a sharp rise, in an old opening made by the swoop of a hurricane, we entered the silent unlighted bivouac of Ferry's scouts. Ferry got down and sat on the earth talking with Quinn, while the sergeants quietly roused the sleepers to horse. Plotinus is driven by this perplexity to reconsider the whole theory of Matter.477 He takes Aristotle¡¯s doctrine as the groundwork of his investigation. According to this, all existence is divided into Matter and Form. What we know of things¡ªin other words, the sum of their differential characteristics¡ªis their Form. Take away this, and the unknowable residuum is their Matter. Again, Matter is the vague indeterminate something out of which particular Forms are developed. The two are related as Possibility to Actuality, as the more generic to the more specific substance through every grade of classification and composition. Thus there are two Matters, the one sensible and the other intelligible. The former constitutes the common substratum of bodies, the other the common element of ideas.478 The general distinction between Matter and Form was originally suggested to Aristotle by Plato¡¯s remarks on the same subject; but he differs325 from his master in two important particulars. Plato, in his Timaeus, seems to identify Matter with space.479 So far, it is a much more positive conception than the ?λη of the Metaphysics. On the other hand, he constantly opposes it to reality as something non-existent; and he at least implies that it is opposed to absolute good as a principle of absolute evil.480 Thus while the Aristotelian world is formed by the development of Power into Actuality, the Platonic world is composed by the union of Being and not-Being, of the Same and the Different, of the One and the Many, of the Limit and the Unlimited, of Good and Evil, in varying proportions with each other. The Lawton woman had heard of an officer's family at Grant, which was in need of a cook, and had gone there. [See larger version] On the 8th of July an extraordinary Privy Council was summoned. All the members, of whatever party, were desired to attend, and many were the speculations as to the object of their meeting. The general notion was that it involved the continuing or the ending of the war. It turned out to be for the announcement of the king's intended marriage. The lady selected was Charlotte, the second sister of the Duke of Mecklenburg-Strelitz. Apart from the narrowness of her education, the young princess had a considerable amount of amiability, good sense, and domestic taste. These she shared with her intended husband, and whilst they made the royal couple always retiring, at the same time they caused them to give, during their lives, a moral air to their court. On the 8th of September Charlotte arrived at St. James's, and that afternoon the marriage took place, the ceremony being performed by the Archbishop of Canterbury. On the 22nd the coronation took place with the greatest splendour. Mother and girls were inconsolable, for each had something that they were sure "Si would like," and would "do him good," but they knew Josiah Klegg, Sr., well enough to understand what was the condition when he had once made up his mind. CHAPTER V. THE YOUNG RECRUITS Si proceeded to deftly construct a litter out of the two guns, with some sticks that he cut with a knife, and bound with pawpaw strips. His voice had sunk very low, almost to sweetness. A soft flurry of pink went over her face, and her eyelids drooped. Then suddenly she braced herself, pulled herself taut, grew combative again, though her voice shook. HoME²Ô¾®Ïè̫ʲôÐÇ×ù
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