A download of a white paper, which takes you to a 'thank you page' after clicking, is of course easy to set as a goal in Analytics ( way as the contact form). But if a click on the download button causes the PDF to be downloaded immediately, you can measure it via Google Tag Manager. Via Google Tag Manager you can create events that are sent to Google Analytics in the same way as you measure the 'Send' button in the contact form. You can use these events to create a goal in Analytics.
Measuring 404 reports On a large and dynamic site, it is almost impossible to avoid links to pages that no longer exist or whose URL has changed. But you want to context you phone number list are know quickly that a page has been displayed, so that you can solve this immediately. This can easily be done via a custom report. These can be found through the "Customization" and "Custom Reports" section in Analytics Here you can create a custom report to, for example, signal a 404 message. The screenshot below explains how to make it: custom notification.
The only variable to check on your own site is the page title. After your domain, type a random text, of which you are sure that no page on your site is really called that way. On your 404 page you can easily get the page title: Measuring scroll depth and percentage of videos viewed Measuring scroll depth down your page) and how long someone watches a video on your site are interesting metrics that you can't get out of Analytics without help from google tags manager. Imagine that you invest a lot of time and energy in developing blog articles and videos, then you also want to be able to demonstrate that they are read. Then only a page view or a video display is not enough.