How to solve CAPTCHA with NextCaptcha#

March 21,2024

As the Internet has grown, CAPTCHA (Completely Automated Park and Turing Test Computers from Humans) has become an important tool for protecting websites and applications from automated bots. In this article, We will explore how NextCaptcha helps solve the CAPTCHA problem.

Introducing CAPTCHA#

CAPTCHA is a Test used to distinguish human users from robots. It verifies the user's identity by asking users to perform some tasks that are easy for humans to recognize but difficult for machines to simulate, such as recognizing text, images, or performing simple mathematical operations. This mechanism helps prevent automated bots from maliciously attacking websites, sending spam, etc.

Why use NextCaptcha#

NextCaptcha is an efficient, reliable CAPTCHA Plan that provides a user-friendly experience. NextCaptcha uses advanced artificial intelligence technology to ensure that users can complete verification quickly. In addition, NextCaptcha also provides a wealth of customization options for reCAPTCHA (v2/v3/Mobile/Enterprise), FunCaptcha, hCaptcha, and integrated multi-language support for global users.

How to use NextCaptcha#

Protecting your website or application with NextCaptcha is easy. First, you need to register a NextCaptcha account and obtain an API key. Then, integrate NextCaptcha into your website or application based on the Docs and sample Code provided by NextCaptcha .

To createTask method, use createTask API to createTask method.#

Task object structure#

clientKeyStringYesYour API key
taskObjectYesAn object that describes the captcha task. For specific types, please refer to the Captcha task type document.
callbackUrlStringNoThe URL of the registered web server used to receive and process the captcha solution results
softIdIntegerNoYour software ID registered in Our software catalog

Request example#

  Content-Type: application/json
      "clientKey":"api key",
      "task": {

To createTask method, use createTask API to createTask method.#

Get task results#

Use getTaskResult API to get task results Depending on the system load, you will get the results in an interval of 1s to 20s

Request example#

  "clientKey": "api key",
  "taskId": 1781234567890

Response example#

    "errorId": 0,
    "status": "ready",
    "solution": {
        "respKey": "E0_eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9",
        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299",
        "gRecaptchaResponse": "P1_eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9"
    "createTime": 1701234567890,
    "endTime": 1701234567890

in conclusion#

NextCaptcha is an excellent choice for solving CAPTCHA problems, combining advanced artificial intelligence technology with user-friendly design.