Do you still mark prefilled input fields as required?

1. How do you indicate required fields in web design?
2. How do I pre fill an HTML form from a URL?

How do you indicate required fields in web design?

Required fields should be indicated with either a symbol or text, not just color. When providing an indicator for a required field, it should be placed right before the form field. This allows a screen reader to read the indicator to a screen reader user right before the user activates the field.

How do I pre fill an HTML form from a URL?

Build Your Pre-fill URL​

To add a form field to the URL, we add a question mark ? after the form URL, then add the form field name, followed by an equal size = and the pre-filled value.