Image checkpoints enable you to check the properties of a 
Web image.QuickTest captures the specified object as a 
bitmap, and inserts a checkpoint in the test or component

Image checkpoint is a standard checkpoint which can be 
applied on a image control in Web based application.
Bitmap checkpoint can be applied on any control.
In Image checkpoint, the properties of the image control 
like "source path of the image" can be checked.

Narendra and Me,
Please give the complete difference between image and 
bitmap check points and when we can use image and bitmap 
che points.
if you insert the image and bitmape check points it will 
give the same script steps, so i can't get the diff between 
check points. please consider my request!!!!!

Image:checks the property values of an image
      check that image source file is correct

Bitmap:checks an area of a web page or application after    
capturing it as a bitmap
check that the web page or application is displayed as a 
expected

checkpoint means :-it is defined as validation point or 
test point which checks the object state or bit map stste 
or data state during the excution at any point of time 
bitmap:-it is used for checking the bitmaps
image:-it is used for checking the properties of an image
it is web based check point
it is also hidden check point

Image Checkpoint only check the property of an image like 
its height, width,?.. whereas Bitmap checkpoint compares or 
check image pixel by pixel

bit mp checkpoint checks the part of the image where as
image checks the property of a image

bitmap is the binary representation of an image. Through 
bitmap check point you can check digital 
signatures ,barcodes etc. But through image checkpoint you 
can check a pictorial image.

let us define what is a bitmap first
bitmap: a bitmap is a binary representation of an image any
image captured.
bitmap check point: a bitmap checkpoint checks for the
binary representation of the web page
image check point: this checks for the complete image in
terms  of the image height, font and other physical
attributes of the image captured.image check point checks
the image source file.

Question is about the difference between Image and Bitmap 
checkpoints and not the definition of the checkpoints.

Here is the difference.

1. Image check point is used to check the property value of 
an specified image cosidering the Image is an object. But 
bitmap check point is not going to retrive any property 
value of the Image rather it verifies the defined area of a 
webpage or application as a bitmap and it won't be used to 
verify the property values like image check point.

Hope this given the answer. Let me know if anyone need an 
example.