Introduction

Nstbrowser CAPTCHA Solver is a built-in browser extension that automatically detects and solves supported CAPTCHAs inside browsers launched by Nstbrowser.

You do not need to install a separate extension or provide a CapSolver API key. CAPTCHA tasks use your Nstbrowser account credits and the pricing configured for your current plan.

Supported CAPTCHA Types

CAPTCHA type	Supported variants
reCAPTCHA v2	Standard and Enterprise
reCAPTCHA v3	Standard and Enterprise
Text CAPTCHA	Image-to-text recognition
AWS CAPTCHA	Supported image challenges
Cloudflare Turnstile	Turnstile widgets

Standard and Enterprise reCAPTCHA variants are detected automatically. They do not require separate configuration fields.

How It Works

Enable CAPTCHA Solver in the saved Profile configuration or provide a runtime configuration when starting the browser.

Start the browser through a Browser API or CDP Endpoint.

The built-in extension detects supported CAPTCHA widgets.

The result is applied to the page automatically.

Your automation reads the page-level CAPTCHA status before continuing.

The browser start response only confirms that the browser was started. It does not mean that a CAPTCHA was detected or solved.

Requirements

Before using CAPTCHA Solver, make sure that:

Nstbrowser Client or Nstbrowser Docker is running.

The browser is authenticated with a valid Nstbrowser API key.

CAPTCHA Solver is available in the current subscription plan.

The required CAPTCHA type is enabled.

The account has sufficient Nstbrowser credits.

The browser was started after CAPTCHA Solver was enabled.

A running browser does not reload CAPTCHA Solver settings automatically. Stop and restart the browser after changing the configuration.

Configuration Priority

For saved Profiles, settings are resolved in the following order:

Runtime API configuration

Profile configuration

Group configuration

Disabled by default

A runtime configuration applies only to the current browser launch and is not saved to the Profile.

Get started

Configuration

Solve Status

Billing and Errors

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Supported CAPTCHA Types#

How It Works#

Requirements#

Configuration Priority#