API Document
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How to solving reCaptcha v2?

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Solving reCaptcha v2

reCAPTCHA V2 also known as I’m not a robot reCAPTCHA is a very popular type of captcha that looks like this:


Solving reCAPTCHA V2 with our new method is pretty simple:

  1. Look at the element’s code at the page where you found reCAPTCHA.
  2. Inspect reCAPTCHA V2 widget source code
  3. Find a link that begins with www.google.com/recaptcha/api2/anchor or find data-sitekey parameter.
  4. Copy the value of k parameter of the link (or value of data-sitekey parameter).
  5. Find 'data-sitekey' parameter
  6. Submit a HTTP GET or POST request to our API URL: https://api.bigcaptcha.com/in.php with method set to userrecaptcha and provide the value found on previous step as value for googlekey and full page URL as value for pageurlSending proxies is not obligatory ar the moment but it’s recommended.
    You can find the full list of parameters in the table below.

Request URL example:

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  • If everything is fine server will return the ID of your captcha as plain text, like: OK|2122988149 or as JSON {“status”:1,”request”:”2122988149″} if json parameter was used.
    Otherwise server will return an error code.
  • Make a 15-20 seconds timeout then submit a HTTP GET request to our API URL: https://api.bigcaptcha.com/res.php to get the result.
    The full list of parameters is in the table below.If captcha is already solved server will respond in plain text or JSON and return the answer token that looks like:


    If captcha is not solved yet server will return CAPCHA_NOT_READY result. Repeat your request in 5 seconds.

    If something went wrong server will return an error code.

  • Locate the element with id g-recaptcha-response and make it visible deleting display:none parameter.Find html element with 'g-recaptcha-response' id

    Please note: sometimes content on the page is generated dynamically and you will not see this element in html source.
    In such cases you have to explore javascript code that generates the content. “Inspect” option in Google Chrome can help in that.

    As an alternative you can just use javascript to set the value of g-recaptcha-response field:

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    An input field will appear on the page. And you just have to paste the answer token to that field and submit the form.
  • Past received token into the field
  • Congratulations, you’ve passed the recaptcha
  • Success

Newly Launched Captcha Solving Service – Big Captcha

We are proud to introduce the following standout features:

  1. 99% Uptime: With a solid 99% uptime, BigCaptcha ensures it is always available to serve you.
  2. Pay-as-you-go: Our flexible payment model allows you to pay only for the number of captchas you decode, saving costs and budget control.
  3. Easy Integration: BigCaptcha offers easy integration into your systems, saving you time and effort.
  4. Fastest Solving Speed: Experience the fastest captcha solving speed on the market with BigCaptcha, saving you time and boosting productivity.
  5. Most Competitive Pricing on the Market: We are committed to providing the most affordable pricing, ensuring you save costs without compromising service quality.
  6. Payment with Cryptocurrency: BigCaptcha offers payment with cryptocurrency, providing convenience and flexibility for customers.

Product & Pricing

Big Captcha is the most affordable tool on the market.

Captcha Type Price Speed Success avg
Normal Captcha $0.2/1000 requests  < 0.3s 96%
reCaptcha v2 $0.35/1000 requests  < 28s 98%
reCaptcha v3 $0.5/1000 requests  < 11s 98%
hCaptcha $0.5/1000 requests  < 10.7s 99%
Fun Captcha $0.2/1000 requests  < 0.1s 93%


Package Daily package Weekly package Monthly package

(5 threads, unlimited request)

$2 $12 $39

(10 threads, unlimited request)

$3.5 $21 $69

(20 threads, unlimited request)

$6.5 $38 $129

(30 threads, unlimited request)

$10 $55 $189

(60 threads, unlimited request)

$18 $99 $369