Can I use the widget with https? - SnapWidget Docs

Yes. Free and Pro widgets both work on websites that use https. The code that you copy from SnapWidget already uses https:

<iframe src="https://snapwidget.com/embed/123456" ...></iframe>

You do not need to change anything.

If your code starts with http

Old widget code can start with http:// instead of https://. Browsers can block this code on a secure website, so the widget does not show. To fix it, get the current code for your widget and replace the old code on your website. If your widget shows “Your widget needs to be upgraded”, see My widget needs to be upgraded.