When I took backup of full-site and database, 3 months ago, size of
captcha was 48mb but now size is increasing.
now I have checked it's taking more than 4 gb disk space.
Full-site database backup zip is 7gb and captcha size is more than 4gb. It is also creating a problem when i extract my fullsite website because captcha is taking too much time to extract.
I am unable to find the reason why are captcha counts and size increasing.