Topic:
The <IMG> tag is used to incorporate in-line graphics (typically icons or small graphics) into an HTML document.
ID
An SGML identifier used as the target for hypertext links or for naming particular elements in
associated style sheets. Identifiers are NAME tokens and must be unique within the scope of the current
document.
LANG
This is one of the ISO standard language abbreviations, e.g. "en.uk" for the variety of
English spoken in the United Kingdom. It can be used by parsers to select language specific choices for
quotation marks, ligatures and hyphenation rules. The language attribute is composed from the two letter
language code from ISO 639, optionally followed by a period and a two letter country code from ISO
3166.
CLASS
This a space separated list of SGML NAME tokens and is used to subclass tag names. By
convention, class names are interpreted hierarchically, with the most general class on the left and the most
specific on the right, where classes are separated by a period. The CLASS attribute is most commonly used
to attach a different style to some element, but it is recommended that where practical class names should be
picked on the basis of the element's semantics, because this permitsother uses, such as restricting search
through documents by matching on element class names. The conventions for choosing class names are
outside the scope of this document.
SRC (Source)
The SRC attribute specifies the URI for the image to be embedded. Its syntax is the same as that of
the HREF attribute of the <A> tag. SRC is mandatory.
MD
Specifies a message digest or cryptographic checksum for the associated graphic specified by the
SRC attribute. It is used when you want to be sure that the image is indeed the same one that the author
intended, and hasn't been modified in any way. For instance,
MD="md5:jV2OfH+nnXHU8bnkPAad/mSQlTDZ" specifies an MD5 checksum encoded as a
base64 character string. The MD attribute is generally allowed for all elements which support URI based
links.
WIDTH
Optional suggested width for the image. By default, this is given in pixels.
HEIGHT
Optional suggested height for the image. By default, this is given in pixels.
UNITS
This optional attribute specifies the units for the width and height attributes. It is one of:
units=pixels (the default) or units=en (half the point size for the base font).
ALIGN
Take values TOP or MIDDLE or BOTTOM, defining whether the top or middle or bottom of the
graphic should be aligned with the baseline for the text line in which the IMG element appears.
With ALIGN=LEFT, the graphic will float down and over to the current left margin, and
subsequent text will wrap around the right hand side of the graphic. Likewise for ALIGN=RIGHT, the
graphic aligns with the current right margin and, and text wraps around the left. It is inappropriate to use this
feature for larger graphics because these are best represented with the FIG element.
ALT (Alternate text)
Optional alternative text as an alternative to the graphics for display in text-only environments. The
alt text can contain entities e.g. for accented characters or special symbols, but it can't contain markup. The
latter is possible, however, with the FIG element.
ISMAP
An image map is a graphical map by which users can navigate transparently from one information
resource to another. The ISMAP attribute identifies an image as an image map. The IMG element can then
be used as part of the label for a hypertext link (see the anchor element). When the user clicks on the image
the location clicked is sent to the server designated by the hypertext link.
<IMG> is legal within:
<A>, <ABBREV>, <ACRONYM>, <ADDRESS>, <AU>, <B>,
<BANNER>, <BIG>, <BODYTEXT>, <CAPTION>, <CITE>,
<CODE>, <CREDIT>, <DD>, <DEL>, <DFN>, <DIV>, <DT>,
<EM>, <FIGTEXT>, <FN>, <FORM>, <H1>, <H2>, <H3>,
<H4>, <H5>, <H6>, <I>, <INS>, <KBD>, <LANG>, <LH>,
<LI>, <NOTE>, <P>, <PERSON>, <Q>, <S>, <SAMP>,
<SMALL>, <STRONG>, <SUB>, <SUP>, <TD>, <TH>, <TT>,
<U>, <VAR>
The following markup can be used within <IMG>
none
<IMG SRC="images/trans001.gif">