Java captcha solver: Bypass reCAPTCHA, Cloudflare, Amazon and More

Use the Java captcha solver to automatically bypass any captcha — including reCAPTCHA v2, Invisible, v3, Enterprise, Cloudflare Turnstile, GeeTest sliders, Amazon AWS WAF, FunCaptcha, and both image and text-based captchas.

✅ Supported captcha solvers

To get started quickly, check out the captcha solver API documentation.

Helpful links:

• reCAPTCHA v2 solver
• reCAPTCHA v3 solver
• Text and image captcha solver
• Cloudflare captcha solver (Turnstile)
• Amazon captcha solver (AWS WAF)
• GeeTest solver
• FunCaptcha (Arkose Labs) solver
• Other types

🛠️ Features

• Fast and fully automated captcha solving
• Native support for Java 8+
• Works with HttpURLConnection, Apache HttpClient, OkHttp, or - Spring WebClient
• Easily integrates into Spring Boot, Jakarta EE, or standalone - Java apps
• Async-friendly architecture using Futures, - CompletableFutures, or reactive streams
• Pay only for successful solves
• 99.9% uptime
• 24/7 developer support

📦 Use cases

• Accessibility
• Web scraping behind protected pages
• Automating form submissions in enterprise Java applications
• Background captcha solving in scheduled jobs or microservices
• QA pipelines with captcha bypass
• Security testing and anti-bot evaluation

Need help integrating with your Go project? Open an issue or fork this repo to contribute.

• Java captcha solver: Bypass reCAPTCHA, Cloudflare, Amazon and More
  • Installation
  • Configuration
    • solvecaptcha instance options
  • Solve captcha
    • Captcha options
    • Basic example
    • Normal Captcha
    • Text Captcha
    • ReCaptcha v2
    • ReCaptcha v3
    • FunCaptcha
    • GeeTest
    • GeeTestV4
    • KeyCaptcha
    • Capy
    • Grid
    • Canvas
    • ClickCaptcha
    • Rotate
    • Audio
    • Yandex
    • Lemin
    • Turnstile
    • AmazonWaf
    • Friendly Captcha
    • MTCaptcha
    • Tencent
  • Other methods
    • send / getResult
    • balance
    • report
  • Proxies
  • Error handling
• Get in touch
• License

Installation

(Coming soon) solveaptcha-java artifact is available in Maven Central

You can install the library directly from GitHub using JitPack:

Step 1: Add the JitPack repository to your build.gradle:

allprojects {
    repositories {
        maven { url 'https://jitpack.io' }
    }
}

Step 2: Add the dependency:

dependencies {
    implementation 'com.github.solvercaptcha:solvecaptcha-java:1.0.0'
}

Replace 1.0.0 with the latest version tag from the releases.

Configuration

solvecaptcha instance can be created like this:

solvecaptcha solver = new solvecaptcha('YOUR_API_KEY');

Also there are few options that can be configured:

solver.setHost("solvecaptcha.com");
solver.setDefaultTimeout(120);
solver.setRecaptchaTimeout(600);
solver.setPollingInterval(10);
solver.setExtendedResponse(1);

solvecaptcha instance options

To get the answer manually use getResult method

[!TIP] Use the extendedResponse(1) setting to obtain an extended response for the captcha. When using extendedResponse(1), the response will be presented as a JSON string. Utilizing the extended response extendedResponse(1) will be helpful when solving captchas such as ClickCaptcha.

Solve captcha

When you submit any image-based captcha use can provide additional options to help SolveCaptcha workers to solve it properly.

Captcha options

Below you can find basic examples for every captcha type. Check out examples directory to find more examples with all available options.

Basic example

Example below shows a basic solver call example with error handling.

Normal captcha = new Normal();
captcha.setFile("path/to/captcha.jpg");
captcha.setMinLen(4);
captcha.setMaxLen(20);
captcha.setCaseSensitive(true);
captcha.setLang("en");

try {
    solver.solve(captcha);
    System.out.println("Captcha solved: " + captcha.getCode());
} catch (Exception e) {
    System.out.println("Error occurred: " + e.getMessage());
}

Normal Captcha

^{API method description.}

To bypass a normal captcha (distorted text on image) use the following method. This method also can be used to recognize any text on the image.

Normal captcha = new Normal();
captcha.setFile("path/to/captcha.jpg");
captcha.setNumeric(4);
captcha.setMinLen(4);
captcha.setMaxLen(20);
captcha.setPhrase(true);
captcha.setCaseSensitive(true);
captcha.setCalc(false);
captcha.setLang("en");
captcha.setHintImg(new File("path/to/hint.jpg"));
captcha.setHintText("Type red symbols only");

Text Captcha

^{API method description.}

This method can be used to bypass a captcha that requires to answer a question provided in clear text.

Text captcha = new Text();
captcha.setText("If tomorrow is Saturday, what day is today?");
captcha.setLang("en");

ReCaptcha v2

^{API method description.}

Use this method to solve ReCaptcha V2 and obtain a token to bypass the protection.

ReCaptcha captcha = new ReCaptcha();
captcha.setSiteKey("6Le-wvkSVVABCPBMRTvw0Q4Muexq1bi0DJwx_mJ-");
captcha.setUrl("https://mysite.com/page/with/recaptcha");
captcha.setInvisible(true);
captcha.setEnterprise(true);
captcha.setAction("verify");
captcha.setProxy("HTTPS", "login:password@IP_address:PORT");

ReCaptcha v3

^{API method description.}

This method provides ReCaptcha V3 solver and returns a token.

ReCaptcha captcha = new ReCaptcha();
captcha.setSiteKey("6Le-wvkSVVABCPBMRTvw0Q4Muexq1bi0DJwx_mJ-");
captcha.setUrl("https://mysite.com/page/with/recaptcha");
captcha.setVersion("v3");
captcha.setEnterprise(false);
captcha.setAction("verify");
captcha.setScore(0.3);
captcha.setProxy("HTTPS", "login:password@IP_address:PORT");

FunCaptcha

^{API method description.}

FunCaptcha (Arkoselabs) solving method. Returns a token.

FunCaptcha captcha = new FunCaptcha();
captcha.setSiteKey("69A21A01-CC7B-B9C6-0F9A-E7FA06677FFC");
captcha.setUrl("https://mysite.com/page/with/funcaptcha");
captcha.setSUrl("https://client-api.arkoselabs.com");
captcha.setUserAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36");
captcha.setData("anyKey", "anyValue");
captcha.setProxy("HTTPS", "login:password@IP_address:PORT");

GeeTest

^{API method description.}

Method to solve GeeTest puzzle captcha. Returns a set of tokens as JSON.

GeeTest captcha = new GeeTest();
captcha.setGt("f2ae6cadcf7886856696502e1d55e00c");
captcha.setApiServer("api-na.geetest.com");
captcha.setChallenge("12345678abc90123d45678ef90123a456b");
captcha.setUrl("https://mysite.com/captcha.html");
captcha.setProxy("HTTPS", "login:password@IP_address:PORT");

GeeTestV4

^{API method description.}

Method to solve GeeTestV4 puzzle captcha. Returns a set of tokens as JSON.

GeeTestV4 captcha = new GeeTestV4();
captcha.setCaptchaId("72bf15796d0b69c43867452fea615052");
captcha.setApiServer("api-na.geetest.com");
captcha.setChallenge("12345678abc90123d45678ef90123a456b");
captcha.setUrl("https://mysite.com/captcha.html");
captcha.setProxy("HTTPS", "login:password@IP_address:PORT");

KeyCaptcha

^{API method description.}

Token-based method to solve KeyCaptcha.

KeyCaptcha captcha = new KeyCaptcha();
captcha.setUserId(10);
captcha.setSessionId("493e52c37c10c2bcdf4a00cbc9ccd1e8");
captcha.setWebServerSign("9006dc725760858e4c0715b835472f22");
captcha.setWebServerSign2("2ca3abe86d90c6142d5571db98af6714");
captcha.setUrl("https://www.keycaptcha.ru/demo-magnetic/");
captcha.setProxy("HTTPS", "login:password@IP_address:PORT");

Capy

Token-based method to bypass Capy puzzle captcha.

Capy captcha = new Capy();
captcha.setSiteKey("PUZZLE_Abc1dEFghIJKLM2no34P56q7rStu8v");
captcha.setUrl("https://www.mysite.com/captcha/");
captcha.setProxy("HTTPS", "login:password@IP_address:PORT");

Grid

^{API method description.}

Grid method is originally called Old ReCaptcha V2 method. The method can be used to bypass any type of captcha where you can apply a grid on image and need to click specific grid boxes. Returns numbers of boxes.

Grid captcha = new Grid();
captcha.setFile("path/to/captcha.jpg");
captcha.setRows(3);
captcha.setCols(3);
captcha.setPreviousId(0);
captcha.setCanSkip(false);
captcha.setLang("en");
captcha.setHintImg(new File("path/to/hint.jpg"));
captcha.setHintText("Select all images with an Orange");

Canvas

^{API method description.}

Canvas method can be used when you need to draw a line around an object on image. Returns a set of points' coordinates to draw a polygon.

Canvas captcha = new Canvas();
captcha.setFile("path/to/captcha.jpg");
captcha.setPreviousId(0);
captcha.setCanSkip(false);
captcha.setLang("en");
captcha.setHintImg(new File("path/to/hint.jpg"));
captcha.setHintText("Draw around apple");

ClickCaptcha

^{API method description.}

ClickCaptcha method returns coordinates of points on captcha image. Can be used if you need to click on particular points on the image.

Coordinates captcha = new Coordinates();
captcha.setFile("path/to/captcha.jpg");
captcha.setLang("en");
captcha.setHintImg(new File("path/to/hint.jpg"));
captcha.setHintText("Select all images with an Orange");

Rotate

^{API method description.}

This method can be used to solve a captcha that asks to rotate an object. Mostly used to bypass FunCaptcha. Returns the rotation angle.

Rotate captcha = new Rotate();
captcha.setFile("path/to/captcha.jpg");
captcha.setAngle(40);
captcha.setLang("en");
captcha.setHintImg(new File("path/to/hint.jpg"));
captcha.setHintText("Put the images in the correct way up");

Audio

This method can be used to solve a audio captcha

solvecaptcha solver = new Solvecaptcha(args[0]);
byte[] bytes = Files.readAllBytes(Paths.get("src/main/resources/audio-en.mp3"));
String base64EncodedImage = Base64.getEncoder().encodeToString(bytes);
Audio captcha = new Audio();
captcha.setBase64(base64EncodedImage);

Yandex

Use this method to solve Yandex and obtain a token to bypass the protection.

solvecaptcha solver = new Solvecaptcha(args[0]);
Yandex captcha = new Yandex();
captcha.setSiteKey("Y5Lh0tiycconMJGsFd3EbbuNKSp1yaZESUOIHfeV");
captcha.setUrl("https://rutube.ru");

Lemin

Use this method to solve Lemin and obtain a token to bypass the protection.

solvecaptcha solver = new Solvecaptcha(args[0]);
Lemin captcha = new Lemin();      
captcha.setСaptchaId("CROPPED_d3d4d56_73ca4008925b4f83a8bed59c2dd0df6d");
captcha.setUrl("http://sat2.aksigorta.com.tr");
captcha.setApiServer("api.leminnow.com");

Turnstile

^{API method description.}

Use this method to solve Turnstile and obtain a token to bypass the protection.

solvecaptcha solver = new Solvecaptcha(args[0]);
Turnstile captcha = new Turnstile();
captcha.setSiteKey("0x4AAAAAAAChNiVJM_WtShFf");
captcha.setUrl("https://ace.fusionist.io");

AmazonWaf

Use this method to solve AmazonWaf and obtain a token to bypass the protection.

solvecaptcha solver = new Solvecaptcha(args[0]);
AmazonWaf captcha = new AmazonWaf();
captcha.setSiteKey("AQIDAHjcYu/GjX+QlghicBgQ/7bFaQZ+m5FKCMDnO+vTbNg96AF5H1K/siwSLK7RfstKtN5bAAAAfjB8BgkqhkiG9w0BBwagbzBtAgEAMGgGCSqGSIb3DQEHATAeBglg");
captcha.setUrl("https://non-existent-example.execute-api.us-east-1.amazonaws.com");
captcha.setIV("test_iv");
captcha.setContext("test_context");

Friendly Captcha

Use this method to solve Friendly Captcha and obtain a token to bypass the protection.

solvecaptcha solver = new Solvecaptcha(args[0]);
FriendlyCaptcha friendlyCaptcha = new FriendlyCaptcha();
friendlyCaptcha.setSiteKey("FCMST5VUMCBOCGQ9");
friendlyCaptcha.setPageUrl("https://mysite.com/page/with/FriendlyCaptcha");

MtCaptcha

Use this method to solve MtCaptcha and obtain a token to bypass the protection.

solvecaptcha solver = new Solvecaptcha(args[0]);
MtCaptcha mtCaptcha = new MtCaptcha();
mtCaptcha.setSiteKey("MTPublic-KzqLY1cKH");
mtCaptcha.setPageUrl("https://mysite.com/page/with/mtcaptcha");

Tencent

Use this method to solve Tencent and obtain a token to bypass the protection.

solvecaptcha solver = new Solvecaptcha(args[0]);
Tencent tencent = new Tencent();
tencent.setAppId("2092215077");
tencent.setPageUrl("https://mysite.com/page/with/tencent");

Other methods

send / getResult

These methods can be used for manual captcha submission and answer polling.

String captchaId = solver.send(captcha);

Thread.sleep(20 * 1000);

String code = solver.getResult(captchaId);

balance

^{API method description.}

Use this method to get your account's balance

double balance = solver.balance();

report

^{API method description.}

Use this method to report good or bad captcha answer.

solver.report(captcha.getId(), true); // captcha solved correctly
solver.report(captcha.getId(), false); // captcha solved incorrectly

Proxies

You can pass your proxy as an additional argument for methods: recaptcha, funcaptcha, geetest, geetest v4, keycaptcha, capy puzzle, lemin, turnstile, amazon waf and etc. The proxy will be forwarded to the API to solve the captcha.

captcha.setProxy("HTTPS", "login:password@IP_address:PORT");

Error handling

If case of an error captcha solver throws an exception. It's important to properly handle these cases. We recommend to use try catch to handle exceptions.

try {
    solver.solve(captcha);
} catch (ValidationException e) {
    // invalid parameters passed
} catch (NetworkException e) {
    // network error occurred
} catch (ApiException e) {
    // api respond with error
} catch (TimeoutException e) {
    // captcha is not solved so far
}

Get in touch

License

The code in this repository is licensed under the MIT License. See the LICENSE file for more details.