Yes, you can embed online forms
→ Embed Code
section of your form. This way, whenever you edit your online form on 123FormBuilder, the changes will automatically apply to your Umbraco webpage.
In your website editor, go to the Files tab and create a New File.
In the lightbox, select HTML or CSHTML. Next, press Ok.
Rename the file if needed and you’ll see the results by launching the file in your browser (right-click file and select Launch in browser).