This file is from Wikimedia Commons (production) and may be used by other projects.
The description on its file description page there is shown below.
The factual accuracy of this signature is disputed. The file's source is listed as "Personal signature" only in text, not providing any URL or other tangible reference to confirm authenticity. For all we know without verification, this could've been fabricated. [[User:HĐ3h3jstjttmZtjtsj5alinktext}}]]) 06:09, 18 February 2021 (UTC)
Summary
DescriptionScarlett Johansson's signature.svg
English: Signature of American actress Scarlett Johansson
Date
Source
Personal signature
Author
Scarlett Johansson Created in vector format by Michael14375
This signature is believed to be ineligible for copyright and therefore in the public domain because it falls below the required level of originality for copyright protection both in the United States and in the source country (if different). In this case, the source country (e.g. the country of nationality of the signatory) is believed to be United States of America.
Note that this tag cannot be used on all signatures, as not all signatures are copyright-free.