HTML Images

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HTML Images Syntax

In HTML, images are defined with the <img> tag.
The <img> tag is empty, it contains attributes only, and does not have a closing tag.
The src attribute specifies the URL (web address) of the image:
<img src="url" alt="some_text">

The alt Attribute

The alt attribute specifies an alternate text for an image, if the image cannot be displayed.
The alt attribute provides alternative information for an image if a user for some reason cannot view it (because of slow connection, an error in the src attribute, or if the user uses a screen reader).
If a browser cannot find an image, it will display the alt text:

Example

<img src="wrongname.gif" alt="HTML5 Icon" style="width:128px;height:128px;">

Image Size - Width and Height

You can use the style attribute to specify the width and height of an image.
The values are specified in pixels (use px after the value):

Example

<img src="html5.gif" alt="HTML5 Icon" style="width:128px;height:128px;">
  • Use the HTML <img> element to define an image
  • Use the HTML src attribute to define the URL of the image
  • Use the HTML alt attribute to define an alternate text for an image, if it cannot be displayed
  • Use the HTML width and height attributes to define the size of the image
  • Use the CSS width and height properties to define the size of the image (alternatively)
  • Use the CSS float property to let the image float
  • Use the HTML <map> element to define an image-map
  • Use the HTML <area> element to define the clickable areas in the image-map
  • Use the HTML <img>'s element usemap attribute to point to an image-map

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