Browser API comparison

Why Browser APIs are needed

Traditional HTTP clients work well when a website returns complete HTML. Many modern websites, however, load data through JavaScript, use dynamic forms, require interface interaction, or evaluate visitor behavior before returning content.

In these cases, sending a request with curl, requests, or fetch is not enough. A full browser may need to:

• execute JavaScript;
• wait for elements to appear;
• click buttons;
• complete forms;
• scroll through pages;
• work with cookies and localStorage;
• preserve authenticated sessions;
• handle redirects and pop-ups;
• load country-specific content;
• pass captcha checks.

These scenarios can be automated locally with Playwright, Puppeteer, or Selenium. As the workload grows, however, the team must maintain Chrome installations, monitor memory consumption, restart frozen processes, distribute sessions, and manage proxies.

A Browser API moves this infrastructure to the cloud. The application continues to control the browser through familiar automation commands, while Chromium runs on the provider's servers.

What matters when choosing a Browser API

Most services look similar at first. They provide a remote Chrome instance and a WebSocket endpoint. The differences become clear only after the first real production deployment.

Automation framework support

Playwright and Puppeteer compatibility should be the minimum requirement. Support for Selenium, Chrome DevTools Protocol clients, and several programming languages is also useful.

If a provider requires the entire automation workflow to be rewritten around a proprietary API, migration can become expensive. A better option is a service that lets developers replace the local browser launch with a remote CDP connection while keeping the rest of the code largely unchanged.

Proxies and geolocation

A remote browser without proxy support is useful only for a limited number of tasks. Automation projects quickly run into problems such as:

• too many requests coming from the same IP address;
• mismatched IP location and browser language;
• inability to access regional content;
• data-center IP restrictions;
• the need to keep one IP address attached to a long-running session.

A practical Browser API should support custom proxies, country selection, and multiple isolated sessions using different IP addresses.

Browser fingerprints

Websites do not evaluate IP addresses alone. They may inspect Canvas, WebGL, WebRTC, fonts, screen resolution, timezone, user-agent, headers, and many other browser signals.

If these values are inconsistent or look too similar across sessions, a website may trigger additional verification even when the proxy itself is reliable.

Built-in fingerprint management is therefore more important than it may first appear. Running standard headless Chrome is no longer sufficient for many production automation scenarios.

Persistent browser profiles

Some jobs can run in a clean browser. Others need to preserve:

• cookies;
• localStorage;
• authentication state;
• website preferences;
• session history;
• a consistent browser fingerprint.

Without persistent profiles, developers must export, store, and restore this data independently. That creates more application logic and more potential points of failure.

Captcha handling

Captcha challenges rarely exist separately from other protection mechanisms. They are usually triggered after the website evaluates the IP address, browser fingerprint, cookies, and user behavior.

A setup where the browser runs with one provider, the proxy comes from another, and captcha solving is handled by a third service quickly becomes difficult to maintain. The system must synchronize the IP address, user-agent, cookies, and page context across several APIs.

The closer captcha handling is integrated with the active browser session, the easier it is to build a reliable workflow.

Debugging

With local Playwright automation, developers can open the browser and inspect where the script stopped. That is not always possible with cloud browser services.

Useful debugging features include:

• live browser viewing;
• console logs;
• network request history;
• active session details;
• traffic usage statistics.

Without visual debugging, developers may see only a timeout and have to guess what actually happened on the page.

Quick comparison

2Captcha Browser API

2Captcha Browser API differs from conventional remote Chrome providers because it is designed around the practical problems developers encounter when automating protected websites.

Users receive a managed cloud browser and connect to it through a CDP WebSocket endpoint. Existing Playwright or Puppeteer code does not need to be completely rewritten. Navigation, selectors, clicks, and form automation can remain largely unchanged.

The main advantage is that the other required components are already available alongside the browser:

• proxy configuration;
• country selection;
• browser profiles;
• fingerprint management;
• live session viewing;
• captcha handling;
• parallel profile execution;
• browser traffic monitoring.

CDP connection

The service provides a ready-to-use WebSocket URL that can be passed to Playwright, Puppeteer, or another client compatible with Chrome DevTools Protocol.

This is particularly useful for projects that already have local browser automation. The developer changes how the browser is launched instead of moving the entire workflow to a proprietary interface.

This model works well for:

• web scrapers;
• automated tests;
• AI agents;
• website monitoring;
• form automation;
• regional content testing;
• JavaScript-heavy websites.

Proxies as part of the browser session

2Captcha supports custom external proxies as well as proxies configured through the service account. Proxy settings can be attached to a browser account and reused by related profiles.

This is simpler than manually building complex proxy connection strings inside every project.

Proxy integration makes it possible to:

• select a target country;
• separate traffic between different jobs;
• test localized website versions;
• keep a stable IP address during long sessions;
• scale several browser sessions in parallel.

The browser, proxy, and captcha components do not need to be managed through several separate dashboards and APIs.

Browser accounts and profiles

2Captcha Browser API uses two core entities: browser accounts and browser profiles.

A browser account stores shared connection settings such as credentials, proxy configuration, and country. A browser profile represents an individual browser session with its own CDP URL, status, and usage statistics.

This structure works well when one account acts as a shared configuration while separate profiles are created for different users, jobs, or websites.

Profiles help isolate:

• cookies;
• authentication sessions;
• website state;
• interaction history;
• browser storage;
• traffic usage.

For long-running workflows, this is more reliable than starting every job in a completely clean browser.

Fingerprints and anti-detection

Cloud browsers are often blocked not because the automation code is incorrect, but because the browser environment looks artificial. Even a strong residential proxy may not help if Canvas, WebGL, timezone, headers, and other values contradict one another.

2Captcha treats fingerprint management as part of the Browser API rather than an unrelated add-on. This matters on websites that evaluate the browser environment before they display a captcha.

Instead of configuring dozens of browser signals manually, developers receive a more consistent environment where proxy location and browser characteristics can work together.

Integrated captcha handling

This is where 2Captcha has its clearest advantage over most general-purpose browser providers.

The company has specialized in captcha solving for years and supports multiple challenge types. As a result, captcha handling inside its Browser API is part of the core infrastructure rather than an external feature added later.

This matters because a captcha challenge is often tied to the active browser session. Successfully continuing the workflow may depend on:

• the same IP address;
• the same user-agent;
• current cookies;
• the correct page URL;
• the active browser context;
• preserving the session after the captcha is solved.

When several unrelated services are used, all these values must be transferred and synchronized manually. A unified browser workflow reduces that risk.

Live browser view

Each active session can be opened in Live mode so developers can see the page exactly as the remote browser sees it.

This is useful when a script stops because of:

• a changed selector;
• an unexpected pop-up;
• a redirect;
• a captcha challenge;
• a proxy failure;
• a regional restriction;
• a slowly loaded element.

Instead of investigating a generic timeout, the developer can inspect the actual state of the page.

Why 2Captcha is the most practical option

2Captcha will not necessarily be the best option for every organization. A large enterprise may require Bright Data's broader compliance infrastructure. A team with strong DevOps resources may prefer to operate its own Browserless deployment.

For most applied automation projects, however, the main requirement is simpler: connect a browser, select a proxy, launch a persistent profile, inspect the session, handle a captcha, and continue the workflow.

2Captcha addresses this complete process more directly than the other services in this comparison.

Browserless

Browserless is a mature platform for running and managing browser infrastructure. It is designed for developers who need remote Chrome instances for internal services, end-to-end testing, CI/CD pipelines, PDF generation, screenshots, and general browser automation.

The platform supports WebSocket connections, REST APIs, BrowserQL, Docker, and self-hosted deployments.

Browserless strengths

• self-hosting support;
• strong DevOps flexibility;
• Playwright and Puppeteer compatibility;
• REST endpoints;
• BrowserQL;
• CI/CD integration;
• control over browser infrastructure.

Browserless is particularly useful when the browser is an internal infrastructure component. A company can operate its own cluster for testing, document generation, screenshots, or internal AI tools.

Where Browserless falls behind 2Captcha

Automating protected websites is not the only or central focus of Browserless. Proxies, persistent identities, browser fingerprints, and captcha handling may require additional configuration or external services.

A typical setup may still require:

• Browserless for Chrome;
• a separate proxy provider;
• a separate captcha solver;
• a custom profile storage system;
• application-level retry logic.

Browserless provides greater infrastructure flexibility. 2Captcha provides a more complete solution for websites where anti-bot checks and captcha challenges are part of the normal workflow.

Bright Data Browser API

Bright Data is one of the best-known providers in the proxy and web data market. Its Browser API is primarily designed for large production scraping projects.

The platform combines a cloud browser with Bright Data's proxy network, geo-targeting, and automated unblocking tools.

Bright Data strengths

• large proxy infrastructure;
• wide geolocation coverage;
• enterprise support;
• automated unblocking mechanisms;
• large-scale workload support;
• Playwright, Puppeteer, and Selenium compatibility;
• established compliance processes.

Bright Data is suitable for organizations that need high-volume data collection, mature infrastructure, and corporate service agreements.

Main disadvantage

Enterprise capabilities introduce both cost and complexity. For a smaller project, the platform can be excessive.

A developer who needs several browser sessions for scraping, testing, or an AI agent may not need the entire Bright Data ecosystem.

2Captcha is simpler in comparison. It provides less enterprise overhead and focuses more directly on protected browser automation involving proxies, profiles, fingerprints, and captcha handling.

Scrapfly

Scrapfly offers more than a remote browser. It provides a broader platform for web scraping.

Its ecosystem includes Cloud Browser, Scraping API, Screenshot API, Extraction API, crawling tools, and anti-bot functionality.

Scrapfly strengths

• several scraping products in one platform;
• Cloud Browser access through CDP;
• support for popular automation frameworks;
• developer SDKs;
• built-in anti-bot features;
• data extraction tools;
• a unified credit system.

Scrapfly is attractive for teams that want one provider for browser automation, HTTP scraping, crawling, and structured data extraction.

Where pricing becomes difficult

Scrapfly usage is billed through credits. JavaScript rendering, proxies, anti-bot functionality, and other options can affect the final consumption.

This model is flexible but can be difficult to predict before production traffic is tested.

For a complete scraping platform, Scrapfly is a strong option. For a more focused workflow involving a browser, proxies, profiles, and captcha handling, 2Captcha is easier to understand and integrate.

ZenRows

ZenRows focuses on simplifying the launch of scraping projects. Its ecosystem combines a Scraper API, Scraping Browser, and residential proxies.

The service hides much of the infrastructure complexity and targets teams that do not want to manage browsers and proxy pools themselves.

ZenRows strengths

• fast onboarding;
• simple interface;
• residential proxies;
• Playwright and Puppeteer support;
• several scraping tools;
• good fit for smaller projects.

Captcha limitation

A Scraping Browser and a captcha solver are not the same product. When a website regularly displays captcha challenges, an additional solver integration may still be required.

This adds another API and makes it more difficult to preserve the context of the active browser session.

ZenRows can be convenient for websites without aggressive protection. When captcha is an expected part of the workflow, using a Browser API from a provider with native captcha expertise is the more practical choice.

Why combining several providers becomes inconvenient

A project may initially use the following architecture:

• Browserless runs the browser;
• a separate proxy provider supplies the IP address;
• a captcha service returns the solution;
• Redis stores cookies;
• a custom service manages browser profiles.

Every additional component introduces separate errors, rate limits, billing systems, and integration points.

The application must ensure that:

• the captcha is solved with the correct IP address;
• the same user-agent is used throughout the workflow;
• cookies are not lost between services;
• the proxy does not change during the session;
• the profile is restored correctly;
• retry attempts do not create conflicting state;
• every provider has enough balance and available capacity.

This is why combining the browser, proxy, profile, fingerprint, and captcha layers is a practical advantage rather than just a convenient feature list.

Which Browser API should you choose?

Choose 2Captcha Browser API if:

• captcha challenges appear regularly;
• you need proxies and country selection;
• browser fingerprints matter;
• profiles and cookies must persist between sessions;
• you need live access to remote browser sessions;
• you use Playwright or Puppeteer;
• you want to avoid integrating several providers;
• you need to launch a production workflow quickly.

Choose Browserless if:

• self-hosting is required;
• your team can manage browser infrastructure;
• your main tasks involve E2E testing, CI/CD, PDFs, or screenshots;
• captcha is not a central problem;
• you need BrowserQL or a custom browser cluster.

Choose Bright Data if:

• the project has an enterprise budget;
• you need large-scale data collection;
• SLA and compliance are critical;
• you need a large proxy network;
• cost matters less than enterprise capabilities.

Choose Scrapfly if:

• you need a complete scraping platform;
• you also use crawler and extraction APIs;
• credit-based pricing is acceptable;
• you want several data collection methods from one provider.

Choose ZenRows if:

• you need a quick start;
• your workflows are relatively standard;
• residential proxies are important;
• captcha appears rarely or is handled separately.

Where 2Captcha Browser API is especially useful

The service is most valuable when the browser must complete a full user journey rather than simply load HTML.

Typical use cases include:

• scraping JavaScript-heavy websites;
• QA testing of protected web applications;
• running AI agents in a real browser;
• automating multi-step forms;
• monitoring regional content;
• working with authenticated sessions;
• automating pages protected by captcha;
• preserving cookies between runs;
• running several isolated profiles in parallel;
• moving local Playwright workflows to the cloud.

In all these cases, the advantage comes from combining several capabilities rather than relying on one isolated feature.

Conclusion

A Browser API should not be selected only because it provides remote Chrome. Most major providers can execute JavaScript and connect to Playwright. The real differences appear when a project has to deal with proxies, fingerprints, cookies, persistent profiles, and captcha challenges.

Browserless remains a strong infrastructure platform, particularly for self-hosted deployments and internal browser workloads.

Bright Data is a better fit for large companies that need enterprise scale, a broad proxy network, and corporate support.

Scrapfly is attractive as a complete scraping platform with several related APIs.

ZenRows is convenient for getting started quickly with comparatively straightforward scraping scenarios.

2Captcha Browser API is the most practical option for projects where browser automation regularly encounters website protection. It combines a cloud browser, proxies, geolocation, fingerprint management, persistent profiles, live session viewing, and captcha handling.

Its main advantage is not that every individual feature is unique. The advantage is that the essential components are organized around one browser workflow.

For developers, QA teams, scraping products, and AI agents, this means fewer integrations, fewer incompatible settings, and less infrastructure code to maintain.

When the goal is not merely to run a browser in the cloud, but to automate protected websites reliably, 2Captcha Browser API is the most balanced solution among the services reviewed here.