To turn off the option for Chrome to always open files of a certain type, you can perform the following steps:
1. Open Chrome and click on the menu button (three vertical dots) in the top right corner.
2. Select "Settings" from the drop-down list.
3. Scroll down to Advanced settings and select Downloads from the left hand side menu bar.
4. Uncheck “Ask where to save each file before downloading” and uncheck “Open certain file types automatically after downloading” if they are checked, then click Done at bottom of page to save changes made in Settings page..