Global traffic rank

  • 79 630

  • Daily visitors

    4 017

  • Daily pageviews

    4 017


Website is generally safe

Trustworthiness: Excellent
Child safety: Excellent

User engagement

Bounce rate:


Average time on site:

24 sec

Visitor Gender

Male: 79.9%
Female: 20.1% The Official CAPTCHA Site Online visit the most interesting CAPTCHA pages, well-liked by male users from USA, or check the rest of data below. is a popular web project, safe and generally suitable for all ages. We found that English is the preferred language on CAPTCHA pages. Their most used social media is StumbleUpon with about 89% of all user votes and reposts. uses Apache HTTP Server.

Language: English language flag English
Last check most visited pages

  • The Official CAPTCHA Site

    CAPTCHA: Telling Humans and Computers Apart Automatically A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs ...

  • The CAPTCHA Project. Robot solves Internet robot problem

    Robot solves Internet robot problem By Byron Spice, Pittsburgh Post-Gazette, October 21, 2001      Manuel Blum was having trouble with his hand-held comp...

  • Audio CAPTCHA Recorder

    2. Record The Digits Press the record button (red circle) to record yourself saying the digits 0-9 in your native language. Please say the digits as clearly as possible, and wait 2 seconds between e...

Social media reactions


Hosting provider:

Carnegie Mellon University


Registrar: Tucows Domains Inc.
Registrant: Redacted for privacy
Updated: January 07, 2022
Expires: February 04, 2026
Created: February 04, 2001 is built with

Server: Apache HTTP Server