Click on the three dot menu button in the top right hand corner of your Chrome browser and next click on 'Settings'.
2. Scroll down until you find the 'Privacy and security' section and click on it. Then click on 'Site Settings'.
3. Scroll the section down to the bottom and click on 'Additional content settings'
and click on 'PDF documents'
4. Finally, select if you would like the PDF documents to automatically download, instead of opening in the same window.