Embedding Google Docs, Sheets and Slides
Before you share a Google Docs file, please make sure that the document is public. If it is private, you’ll be the only one who can see it. To change your privacy setting, click the Share link at the top of the screen to make it public.
Retrieving the embed URL
To embed a Doc into your blog, open the document. Select the Publish to the Web under the File menu.
Click the Publish button.
Then copy the URL in the embed code (between quotes after src) and paste it into your Postach.io shortcode.
Generating your shortcode
Now that you’ve retrieved the embed URL, simply add the embed code below, replacing the URL with the your embed URL:
The height and width parameters are optional - if they are left blank, a responsive 4x3 sizing will be used instead.