Documentation forWeb Performance Monitor

Verify images with the Deprecated WPM Recorder

Click here to learn about recorders supported in the latest WPM release.

WPM can perform image verification during a recording in conjunction with X,Y Capture Mode to record non-HTML page elements.

In X,Y Capture Mode, select a small region on the page by holding down the left mouse button and dragging the mouse. (The page is grayed-out when image verification is enabled.) After you capture a portion of the image, click the Match Image button which appears when you release the mouse button. WPM verifies the image during playback. If the image is not found, the search is repeated until the defined time elapses.

Note the following details about using Image Match with X,Y Capture Mode:

  • Using Image Match for animated objects is not recommended. During playback, animated objects may be in a different phase of animation so WPM may not be able to find the exact recorded image.
  • Image Match is CPU intensive. Select only small regions or portions of the image to improve playback performance.
  • Avoid using X,Y Capture Mode for lossy formats such as JPEG and PNG.
  • Actions are recorded at the user's speed. If you have an unnecessary delay in a recording, double-click the recorded action and change the recorded delay to another value.
  • Do not use Image Match on screen resolutions greater than 1920 x 1200 pixels as OS limitations do not allow the WPM Player to function above this resolution.
  • When WPM finds a matching image on a page, the timer stops and the next step begins. Image Match time is measured and added to the overall step duration.

To enable Image Verification:

  1. Click the Image Verification icon.
  2. Click and hold the left mouse button while dragging the mouse to select the image to match.
  3. Click the Match Button.
  4. Verify the image in the picture and click OK.

    5. Allow extra time if an image is dynamically generated.

  5. Save the recording.

You can also use WPM to verify an image with a single click if an image includes a hyperlink.

To enable Image Verification with a click:

  1. Click the Image Verification with click icon.
  2. Click and hold the left mouse button while dragging the mouse to select the image to match.
  3. Click the Match and Click Image button.
  4. Verify the image in the picture and click OK.

    5. Allow extra time if an image is dynamically generated.

  5. Save the recording.