How to force render a file in a browser
Some browsers aren't configured to correctly preview files. While certain file types can be downloaded instead of opened, others—like HTML—are not supported.
To bypass the preview page and allow your browser to directly render your files, use "raw=1" as a query parameter in your URL, which should be available to anyone with no restrictions. Changing "dl=1" or "dl=0" to "raw=1" in a URL will cause an HTTP redirect. If you're an app developer using such a URL in your code, make sure your app can follow redirects.