Using an api to convert text to pdf is unneccessary and unsafe. Literally everything you save can be accessed by PDFCrown. There is no guarantee they don't log everything you save.
This extension is completely free, but uses API -> costs money to keep up. Most often in situations like these you are the product and your data is sold.
I'd recommend to stay away and search for alternatives. The extension also watermarks the pdfs

Solved a big problem for me. Don't mind the watermarks

This is perfect: easy to use, options to customize, with a very professional aesthetic. For a free extension, and if you are looking for the capabilities this extension provides, there is no better alternative. 10/5 truly love this extension.

Big Ugly Watermarks, Eww.

Works perfectly and you can also select sheet size: A4, portrait, landscape...

great app