A direct tool does not exist because you cannot turn an image file into a encrypted security credential. If a website claims to offer this specific service, avoid it to protect your system from malware or data harvesting.
https://www.certutil.io/jpg-to-pfx (example – use one from above) Jpg To Pfx Converter Online Free -UPD-
This tool is useful if you simply need to password-protect a JPG and name the output with a .pfx extension, but . A direct tool does not exist because you