Recording With ZebraTester

You can use ZebraTester to record web surfing sessions.

Note: As an alternative, you can use the Firefox Recoding Extension.


Load tests against Web servers or web applications are usually based on recorded web surfing sessions. This means that you usually first record a Web surfing session before you can execute a load test. In simple cases - when no login is required and no HTML forms need to be submitted - you may alternatively use the Page Scanner tool instead of recording a web surfing session manually.

Recording of web surfing sessions is supported by using any web browser, such as Internet Explorer, Google Chrome or Safari. You can use also Firefox without installing the Recording Extension.

You must reconfigure your Web browser before you will be able to record a Web surfing session. (proxy host, proxy port 7997, do not use Proxy for

  1. Start a second Web browser window
  2. Clear the Web browser cache and all cookies ¹
  3. Click the Start Recording button in the Web Admin GUI in the first Web browser window
  4. Enter the desired start page of the Web server or Web application in the second Web browser window

The first Web page should now be recorded. Click the Refresh Display button in the right upper corner inside the Web Admin GUI to see if the recording of the Web page was successful. If no data was recorded, you should check the proxy configuration of the Web browser.

¹ Please note that you must first clear the Web browser cache and all cookies every time before you start recording a new Web surfing session. Chapter 3.3 in the Installation Guide contains some illustrations about how to clear the Web browser cache and all cookies.

First Web Browser Window - Web Admin GUI

Second Web Browser Window - Web Application

You must insert a page break before the next Web page is called. The reason for this is that the local proxy server cannot not recognize when a Web page starts, and when it finishes. The local proxy server only sees singe URL calls, such as requests for HTML data or image files. Adding a page break manually here is necessary in order to record the session properly.

Use the following strategy during the recording of a web surfing session over several web pages:

  1. First plan which URL or hyperlink you will call (and record) next, but don't click on it just yet!
  2. Then, insert a page break comment into the Web Admin GUI. Enter a comment describing the expected result of the next recorded Web page.
  3. Now call the desired URL by clicking on a hyperlink or submitting a form.

Repeat this strategy for each Web page that you call during recording. Remember that you must insert the page break before you click the next hyperlink or submit the next form.

The time in seconds near the page break comment is the user’s

think time which will be applied during the load test. This is the time

which a (human) user needs to study the content of the Web page

before clicking on the subsequent page. The percentage value near

the time is the randomized range of the think time which will be

calculated new every time, for each user and page-call during the test. This means that concurrent users will not use the same think time.

Click the Stop Recording button in Web Admin after you have finished recording all Web pages.