Recently, I had some pictures on my computer which I didn’t want anyone else to see and hence, started Googling for some freeware that could do the job. Although, there are other methods that could have done the job, like locking folders without any software, hiding files in a JPEG or by making invisible folders. But I was looking something more specific for my images only. So, in the end what I found was LockImage.
LockImage is an open-source application that can be used to password-protect images and can be opened on another computer without the need of the application itself. It protects an image by converting it into a password-protected executable and you can view them in an embedded image viewer. The only downside of this application is that images once turned into password-protected executable, cannot be converted back to standard images.