PDF downloads are one of the most common conversion methods for websites. Some samples would be businesses allowing users to download their company brochures or product catalogs and education websites that have educational materials for download.
You may be able to track the total number of downloads a PDF file gets by using a plugin but it doesn’t really tell you anything. Any piece of data is important if you want more people to download your PDF files from your website. Luckily, Google Tag Manager makes it easier for webmasters to track PDF downloads across their websites and collect data using Google Analytics.