Websites using reCAPTCHA

www.google.com/recaptcha/

This reCAPTCHA list is updated daily.

Last updated:

reCaptcha is also known to rely on advanced risk analysis techniques to ensure that bots are warded off. It relies on adaptive challenges as well. It is recognized for its reliability and effectiveness in bot mitigation and fraud detection. It relies on bot algorithms and machine learning. It is used for protection against account takeovers, false posts, content pilfering for ad revenue diversion and money laundering.

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✨ reCAPTCHA history

ReCAPTCHA, introduced in 2007 by researchers at Carnegie Mellon University, transformed the traditional CAPTCHA system by incorporating digitized books and newspapers that needed transcription. This innovation enabled websites to not only verify user authenticity, but also contribute to the digitization process of historical archives, uniting human effort and technology to preserve knowledge.

Websites using reCAPTCHA

Websites

Technologies

yycco.com

latinas-uminho.com

duajari.com

masalaxpress.com

tampabayluxuryrealestate.com

spirtprom.com

clubneos.com

earthjewellery.com

smithestates.com

keelmar.com

reCAPTCHA Variations

reCAPTCHA 0.01

reCAPTCHA 0.03

reCAPTCHA 0.07

reCAPTCHA 0.1

reCAPTCHA 0.11

reCAPTCHA 0.13

reCAPTCHA 0.14

reCAPTCHA 0.16

reCAPTCHA 0.18

reCAPTCHA 0.2

reCAPTCHA 0.21

reCAPTCHA 0.27

reCAPTCHA 0.33

reCAPTCHA 0.44

reCAPTCHA 0.47

reCAPTCHA 0.49

reCAPTCHA 0.5

reCAPTCHA 0.51

reCAPTCHA 0.55

reCAPTCHA 0.59

reCAPTCHA 0.67

reCAPTCHA 0.7

reCAPTCHA 0.76

reCAPTCHA 0.77

reCAPTCHA 0.82

reCAPTCHA 0.86

reCAPTCHA 0.87

reCAPTCHA 0.94

reCAPTCHA 1

reCAPTCHA 1.01

reCAPTCHA 1.02

reCAPTCHA 1.03

reCAPTCHA 1.1

reCAPTCHA 1.11

reCAPTCHA 1.12

reCAPTCHA 1.13

reCAPTCHA 1.14

reCAPTCHA 1.15

reCAPTCHA 1.17

reCAPTCHA 1.2

reCAPTCHA 1.21

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reCAPTCHA 1.24

reCAPTCHA 1.3

reCAPTCHA 1.31

reCAPTCHA 1.32

reCAPTCHA 1.33

reCAPTCHA 1.36

reCAPTCHA 1.37

reCAPTCHA 1.39

reCAPTCHA 1.4

reCAPTCHA 1.41

reCAPTCHA 1.47

reCAPTCHA 1.5

reCAPTCHA 1.52

reCAPTCHA 1.56

reCAPTCHA 1.57

reCAPTCHA 1.59

reCAPTCHA 1.6

reCAPTCHA 1.62

reCAPTCHA 1.63

reCAPTCHA 1.64

reCAPTCHA 1.65

reCAPTCHA 1.66

reCAPTCHA 1.68

reCAPTCHA 1.7

reCAPTCHA 1.8

reCAPTCHA 1.82

reCAPTCHA 1.9

reCAPTCHA 1.95

reCAPTCHA 1.98

reCAPTCHA 1.99

reCAPTCHA 2

reCAPTCHA 2.1

reCAPTCHA 2.11

reCAPTCHA 2.12

reCAPTCHA 2.13

reCAPTCHA 2.16

reCAPTCHA 2.2

reCAPTCHA 2.3

reCAPTCHA 2.4

reCAPTCHA 2.45

reCAPTCHA 2.46

reCAPTCHA 2.48

reCAPTCHA 2.5

reCAPTCHA 2.57

reCAPTCHA 2.6

reCAPTCHA 2.7

reCAPTCHA 2.8

reCAPTCHA 2.9

reCAPTCHA 3

reCAPTCHA 3.1

reCAPTCHA 3.11

reCAPTCHA 3.12

reCAPTCHA 3.13

reCAPTCHA 3.14

reCAPTCHA 3.15

reCAPTCHA 3.16

reCAPTCHA 3.17

reCAPTCHA 3.2

reCAPTCHA 3.25

reCAPTCHA 3.29

reCAPTCHA 3.3

reCAPTCHA 3.31

reCAPTCHA 3.32

reCAPTCHA 3.33

reCAPTCHA 3.35

reCAPTCHA 3.4

reCAPTCHA 3.5

reCAPTCHA 3.52

reCAPTCHA 3.6

reCAPTCHA 3.7

reCAPTCHA 3.8

reCAPTCHA 3.9

reCAPTCHA 4

reCAPTCHA 4.1

reCAPTCHA 4.11

reCAPTCHA 4.12

reCAPTCHA 4.13

reCAPTCHA 4.14

reCAPTCHA 4.15

reCAPTCHA 4.18

reCAPTCHA 4.2

reCAPTCHA 4.3

reCAPTCHA 4.4

reCAPTCHA 4.5

reCAPTCHA 4.6

reCAPTCHA 4.7

reCAPTCHA 4.8

reCAPTCHA 4.9

reCAPTCHA 5

reCAPTCHA 5.1

reCAPTCHA 5.15

reCAPTCHA 5.19

reCAPTCHA 5.2

reCAPTCHA 5.3

reCAPTCHA 5.4

reCAPTCHA 5.5

reCAPTCHA 5.6

reCAPTCHA 5.7

reCAPTCHA 5.8

reCAPTCHA 5.9

reCAPTCHA 6

reCAPTCHA 6.1

reCAPTCHA 6.2

reCAPTCHA 6.3

reCAPTCHA 6.5

reCAPTCHA 7

reCAPTCHA 7.5

reCAPTCHA 7.6

reCAPTCHA 7.8

reCAPTCHA 8

reCAPTCHA 8.1

reCAPTCHA 8.2

reCAPTCHA 8.54

reCAPTCHA 9.2

reCAPTCHA 9.3

reCAPTCHA 9.4

reCAPTCHA 9.5

reCAPTCHA 9.6

reCAPTCHA 9.7

reCAPTCHA 9.9

reCAPTCHA 10

reCAPTCHA 10.1

reCAPTCHA 10.11

reCAPTCHA 10.12

reCAPTCHA 10.13

reCAPTCHA 10.14

reCAPTCHA 10.15

reCAPTCHA 10.16

reCAPTCHA 10.2

reCAPTCHA 10.3

reCAPTCHA 10.4

reCAPTCHA 10.6

reCAPTCHA 10.64

reCAPTCHA 10.68

reCAPTCHA 10.7

reCAPTCHA 10.8

reCAPTCHA 10.9

reCAPTCHA 11

reCAPTCHA 11.1

reCAPTCHA 11.2

reCAPTCHA 11.4

reCAPTCHA 11.5

reCAPTCHA 11.7

reCAPTCHA 12

reCAPTCHA 12.1

reCAPTCHA 12.11

reCAPTCHA 12.12

reCAPTCHA 12.13

reCAPTCHA 12.2

reCAPTCHA 12.4

reCAPTCHA 12.5

reCAPTCHA 12.8

reCAPTCHA 12.9

reCAPTCHA 13.1

reCAPTCHA 13.4

reCAPTCHA 13.5

reCAPTCHA 13.6

reCAPTCHA 13.7

reCAPTCHA 13.8

reCAPTCHA 13.9

reCAPTCHA 14.2

reCAPTCHA 14.3

reCAPTCHA 14.4

reCAPTCHA 14.5

reCAPTCHA 15

reCAPTCHA 15.06

reCAPTCHA 15.1

reCAPTCHA 15.2

reCAPTCHA 16.3

reCAPTCHA 17

reCAPTCHA 17.8

reCAPTCHA 18

reCAPTCHA 19.01

reCAPTCHA 20.09

reCAPTCHA 20.1

reCAPTCHA 20.11

reCAPTCHA 20.12

reCAPTCHA 22.2

reCAPTCHA 25

reCAPTCHA 45.2

reCAPTCHA 100

reCAPTCHA 121.3

reCAPTCHA 2022.01

reCAPTCHA 99910.8

reCAPTCHA 2.02002e+07

reCAPTCHA 2.02201e+07

reCAPTCHA 1.63941e+09

reCAPTCHA 1.67696e+09

reCAPTCHA 1.67711e+09

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✨ Facts about reCAPTCHA

1. reCAPTCHA is a security tool: Created by Google, reCAPTCHA is designed to protect websites from spam and other malicious automated activities by requiring users to prove they are human before accessing certain content or services.

2. Uses Optical Character Recognition (OCR): reCAPTCHA works by displaying distorted images of text or a series of pictures, which users must correctly identify. These images are often sourced from old books or newspapers, and OCR technology is employed to decipher the text within the images.

3. It helps digitize books and newspapers: By having users solve reCAPTCHA challenges, they inadvertently contribute to the digitization of printed materials that are difficult to be scanned by computers. This crowdsourced effort assists in converting texts in old books and newspapers into digital, searchable formats.

4. There are different versions of reCAPTCHA: The first version, referred to as reCAPTCHA v1, required users to type in two words displayed as distorted images. As technology developed and bots became more efficient, newer versions were released. reCAPTCHA v2 introduced the "I'm not a robot" checkbox, and reCAPTCHA v3 uses advanced risk analysis techniques to evaluate user behavior, providing a score instead of requiring direct user interaction.

5. Privacy concerns: Some critics argue that reCAPTCHA poses privacy concerns as the tool can collect user data, such as IP addresses, browser and language information, and device details. Google asserts that this data is used to improve the system and provide additional security against automated attacks.

Frequently Asked questions

What is reCAPTCHA?

What are the different types of reCAPTCHA?

Why are reCAPTCHAs important for website security?

Does reCAPTCHA work on mobile devices?

How can I add reCAPTCHA to my website?