1) Default
Input this code: [captchac captcha-170]
[captchar captcha-170 4/4]
2) Small size, inverted
Input this code: [captchac captcha-778 size:s fg:#ffffff bg:#000000]
[captchar captcha-778 4/4]
3) Large size, green text
Input this code: [captchac captcha-118 size:l fg:#00ff00 bg:#ffffff]
[captchar captcha-118 4/4]
[submit «Send»]