The first test compares the number of images in two PDF documents:

<testcase name="haveSameNumberImages">
  <assertThat testDocument="test/test.pdf"
              masterDocument="master/master.pdf"
  >
    <haveSameNumberOfImages />
  </assertThat>
</testcase>

The comparison can be limited to selected pages:

<testcase name="haveSameNumberOfImages_OnPage2">
  <assertThat testDocument="test/test.pdf"
              masterDocument="master/master.pdf"
  >
    <haveSameNumberOfImages onPage="2"/>
  </assertThat>
</testcase>

All possibilities to select pages are described in chapter 13.2: “Page Selection”.

The images stored in a test PDF can be compared with those of a master PDF. They are identified as equal when they are equal byte-by-byte.

<!--
  The tag <haveSameImages /> does not consider the order of the images.
-->

<testcase name="haveSameImages">
  <assertThat testDocument="test/test.pdf"
              masterDocument="master/master.pdf"
  >
    <haveSameImages />
  </assertThat>
</testcase>

This test does not care about which pages the images appear on or how often they are used.

You can restrict the comparison of images to individual pages:

<testcase name="haveSameImages_OnPage2">
  <assertThat testDocument="test/test.pdf"
              masterDocument="master/master.pdf"
  >
    <haveSameImages onPage="2"/>            
  </assertThat>
</testcase>

<testcase name="haveSameImages_BeforePage2">
  <assertThat testDocument="test/test.pdf"
              masterDocument="master/master.pdf"
  >
    <haveSameImages onEveryPageBefore="2"/> 
  </assertThat>
</testcase>

If there are any doubts about the images in a PDF document all images can be extracted using the utility ExtractImages. See chapter 9.7: “Extract Images from PDF”.