What is Captcha code? How do captcha Works?

Captcha image

What is Captcha?

Captcha is a kind of code, if understood in the language, the web page moves on solving it. The captcha code appears most of the time while logging in or signing up on many websites. The main function of captcha is to differentiate between robots and human beings. If there is no captcha, then the spam will spread all over the internet, but the captcha prevents these spams from growing.

What is captcha

How do Captcha works?

The Captcha code is designed in such a way that it cannot be opened by Robots only humans can open this. The numerals and alphabets involved are twisted in such a way that only humans can solve them. Robots may fast and quick but they are not as intelligent as human beings because of that too they are unable to open captcha code. Significantly, robots are only able to read-only and written directly.

Types of Captcha

There are many types of captcha. If you have ever opened any captcha, then you must have noticed that every website has different types of captcha problems.captchas on the internet, including Math Problem, Word Problem, Social Media Captcha, Time Based Captcha.

History of Captcha

The captcha code was first created in the year 2000 and it was first used by Yahoo. The captcha code blocked many hackers. The main weapon of hackers is spam. Captcha was created to prevent spam.

Benefits Of Captcha

Captcha code is designed to prevent spam. If I say in easy language, there are many websites on which fake ID is created to collect traffic. Such fake IDs are controlled by computer robots and software. Captcha was created to prevent such robots. The captcha rotates and shows numbers and alphabets so that the robots cannot read it.


1.   Spam can be avoided by using captcha.

2.   CAPTCHA has been installed on several payment gateways to prevent the website from running.


While captcha has many advantages, it also has many disadvantages. The following are the disadvantages of the captcha code.

1.   The code is very difficult to read, due to which some users are not able to use it.

2.   Due to this, most website visitors leave the website.

3.   It takes too much time.  

The Perfect Spot

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