~area- used to define the coordinates or edges of the map area and uses shape, coords, alt, and href attributes.
~<hr />- configures a horizontal line across a Web page.
~<img />-  used to place graphics on a Web page.
~<map>-  used to begin and end the image map
~alt attribute-  provides a text replacement, typically a text description, of the image.
~animated GIFs-  use the .gif file extenstion.  They are contained in a GIF file that consists of several images or frames, each of which is slightly different.
~antialiasing-  process of creating a slight blur to smooth the jagged (stair-step) edges found in digital images.
~background-image property- background image on an element
~background-repeat property-  controls how the background image will repeat
~border property-  configures the border, or boundary, around an element.
~border-color property-  the color of the border around an element
~border-style property-  offers a variety of formatting options including inset, outset, double, groove, ridge, solid, dashed, and dotted.
~border-width property- the width of a border around an element
~gamma-  refers to the brightness and contrast of the monitor display
~GIF-  (Graphic interchange format) best used for flat line drawings containing solid tones and simple images such as clip art.
~halo effect-  a fringe of color around parts of the transparent image
~height attribute-  can cause the Web page to load more efficiently and quickly.
~hotspots-  clickable areas
~hspace attribute-  amount of space that is blank  to the left and right of the image in pixels (deprecated)
~image link-  to make an image function as a hyperlink is very easy
~image map-  an image that can be used as one or more hyperlinks
~image optimization-  process of creating an image with the lowest file size that still renders a good quality image.
~image slicing-  single, complex images into multiple, smaller images, you can optimize all portions for the most efficient display
~interlaced image-  the image first appears fuzzy but gradually  becomes clearer and sharper
~JPEG-  (Joint Photographic Experts Group) best used for photographic images.
~longdesc attribute-  URL of a Web page that contains a text description of the image.
~lossless compression-  nothing in the original image is lost and that the compressed image, when rendered by a browser, will contain the same pixels as the original.
~lossy compression-  some pixels in the original image are lost or removed from the compressed file.
~padding property-  configures the empty space between the content of the XHTML element and the border.
~pixelation-  square blockiness you see in the the smalles file
~PNG-  (Portable network graphic) combines the best of GIF and JPEG images and will be a replacement for the GIF in the future.
~progressive JPEG-  similar to an interlaced GIF in that the image progressively displays and seems to fade in as it downloads.
~resolution-  Web browsers display images ar relatively low resolution
~src attribute-  used to specify the file name of the image.
~thumbnail image-  smaller version of an image you would like to include on a Web site.
~transparency-  helps te image to blend in with the Web page background o table background.
~usemap attribute-  used to indicate which <map> to use.
~vspace attribute-  amount of space that is blank above and below the image in pixels (deprecated)
~width attribute-  can cause the Web page to load more efficiently and quickly.