Google Docs hosts all documents uploaded via POWr File Embed and the "No preview available" message occurs on Google's end. Try these steps to make your file viewable in the Google Doc Viewer.
Step 1: Rename your document without spaces
If the name of your file is saved with spaces, rename it on your local device without spaces and re-upload the file to your File Embed plugin.
Example: a file named "PDF template 1" should be re-uploaded as "PDFtemplate1"
Step 2: Compress the file
- Use Adobe Acrobat to save your PDF file as an Optimized PDF in order to reduce the file size. In Acrobat, save your PDF by going to File > Save As Other > Optimized PDF. Then, re-upload your Optimized PDF to your File Embed plugin.
- Use a free online tool such as https://smallpdf.com/compress-pdf to compress your PDF file. Then, re-upload your compressed PDF to your File Embed plugin.