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Nick Kellstrem
Nick Kellstrem

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Browser API comparison: 2Captcha, Browserless, Bright Data, Scrapfly, and ZenRows

A local Playwright script is easy to build. Keeping it stable against JavaScript-heavy pages, geo restrictions, session checks, browser fingerprinting, proxy failures, and captcha challenges is the difficult part.

After comparing five cloud browser platforms, my main takeaway is straightforward: 2Captcha Browser API is one of the most practical options when the workflow needs more than a remote Chrome instance. It combines cloud browsers with proxy configuration, browser profiles, fingerprint-related tooling, live session inspection, and captcha handling.

Browserless is a better fit when browser infrastructure or self-hosting is the priority. Bright Data is built for large enterprise scraping operations. Scrapfly offers a broader data collection platform. ZenRows is convenient for teams that want a simple managed scraping stack.

But for workflows where the main problem is the combination of browser automation, proxies, profiles, anti-bot checks, and captchas, 2Captcha offers the most balanced package of the five.

The comparison criteria

Almost every Browser API supports Playwright or Puppeteer. That alone is no longer enough to distinguish one provider from another.

For this comparison, I focused on the parts that usually create production problems:

  • Playwright, Puppeteer, Selenium, and CDP support
  • proxy configuration and geo targeting
  • browser fingerprints and stealth behavior
  • persistent profiles and session state
  • captcha handling
  • concurrent sessions
  • live debugging
  • infrastructure control
  • billing predictability
  • the number of external services required

The last point matters more than it may appear.

A remote browser can load the page, but the complete workflow may still require a separate proxy provider, captcha solver, profile store, fingerprint manager, retry service, and debugging interface.

Every additional provider creates another API, account, billing model, failure mode, and support channel.

Quick comparison

Platform Best fit Main advantage Main limitation
2Captcha Browser API Protected-site automation using proxies, profiles, fingerprints, and captchas Integrated browser automation stack with strong captcha expertise A single session is limited to 30 minutes, and each profile supports one active CDP connection
Browserless Browser infrastructure, testing, CI/CD, internal tools, and self-hosting Mature browser platform with cloud and self-hosted deployment options Anti-bot and captcha features are divided between different products and workflows
Bright Data Browser API Large enterprise scraping operations Large proxy infrastructure, automated unblocking, geo targeting, and enterprise support More infrastructure and pricing complexity than many smaller teams need
Scrapfly Cloud Browser Teams already using a broader scraping and extraction platform Cloud browser, scraping APIs, SDKs, proxy pools, and AI-agent integrations Credit billing depends on both session duration and bandwidth
ZenRows Scraping Browser Developers who want a simple managed browser with automatic proxy rotation Easy Playwright and Puppeteer integration Its documentation states that the Scraping Browser itself does not include built-in captcha solving

A Browser API is more than remote Chrome

Moving Chrome to the cloud solves several infrastructure problems:

  • Chrome installation
  • browser updates
  • container management
  • process cleanup
  • memory leaks
  • browser crashes
  • concurrent browser allocation

It does not automatically solve access problems.

A website can still evaluate:

  • the IP address and network type
  • country and ASN
  • TLS and HTTP fingerprints
  • browser properties
  • WebGL and Canvas values
  • timezone and language consistency
  • cookies and local storage
  • navigation behavior
  • session history
  • captcha results

This is why a platform designed only to run headless browsers can behave very differently from a platform designed for browser-based data collection.

Why 2Captcha Browser API stands out

The strongest part of 2Captcha Browser API is not one isolated feature. It is the way several necessary components are available inside the same workflow.

A typical automation task may need to:

  1. select a country;
  2. connect a residential or custom proxy;
  3. start an independent browser profile;
  4. open a JavaScript-heavy page;
  5. interact with forms and dynamic elements;
  6. handle a captcha challenge;
  7. inspect the live browser when something fails;
  8. run multiple profiles in parallel.

That is close to the product model used by 2Captcha.

Direct CDP connections

2Captcha provides a CDP WebSocket URL that can be connected to from Playwright, Puppeteer, or another CDP-compatible client.

You do not need to launch Chrome locally. The existing automation logic remains mostly unchanged.

A minimal Playwright connection looks like this.

Install Playwright:

npm init -y
npm install playwright
Enter fullscreen mode Exit fullscreen mode


`

Save the following as browser-api.mjs:

`javascript
import { chromium } from "playwright";

const cdpUrl = process.env.BROWSER_CDP_URL;

if (!cdpUrl) {
throw new Error(
"BROWSER_CDP_URL is not set. Copy the CDP URL from the 2Captcha Browser API dashboard."
);
}

const browser = await chromium.connectOverCDP(cdpUrl);

try {
const [context] = browser.contexts();

if (!context) {
throw new Error("The remote browser did not provide a browser context.");
}

let [page] = context.pages();

if (!page) {
page = await context.newPage();
}

await page.goto("https://example.com", {
waitUntil: "domcontentloaded",
timeout: 60_000,
});

console.log({
title: await page.title(),
url: page.url(),
});

await page.screenshot({
path: "page.png",
fullPage: true,
});
} finally {
await browser.close();
}
`

Run it with the CDP URL generated in the dashboard:

bash
BROWSER_CDP_URL="YOUR_CDP_URL" node browser-api.mjs

The CDP URL contains browser credentials and should be treated as a secret. Keep it in an environment variable or secret manager instead of committing it to Git.

Proxy configuration

2Captcha supports several proxy configurations:

  • a proxy account from the 2Captcha ecosystem;
  • an external HTTP or HTTPS proxy;
  • an external SOCKS proxy;
  • proxy settings inherited from the browser account;
  • separate proxy settings for an individual browser profile;
  • a proxy passed directly through the connection configuration.

This is useful when different workers require different countries, IP pools, or session policies.

For example, one automation process can use a US profile while another uses a German profile. Each process receives its own CDP URL and independent browser profile.

The practical model is:

text
one profile = one independent session
one CDP URL = one worker or task

That is easy to map to a worker queue.

Browser profiles

Profiles are one of the clearest advantages of the 2Captcha approach.

Instead of treating every connection as an anonymous browser process, the platform gives each profile its own:

  • CDP URL
  • proxy configuration
  • request statistics
  • traffic usage
  • status
  • live session link

Additional profiles can be generated for parallel tasks.

This is more convenient than manually coordinating browser IDs, proxy credentials, and session ownership across several services.

Profiles are stored for up to 90 days unless deleted. There are two limits worth considering before building around them:

  • one profile supports one active CDP connection;
  • a single browser session has a maximum duration of 30 minutes.

These limits are reasonable for scraping jobs, form workflows, QA tasks, and short-running agents. They may require additional orchestration for browser sessions that must remain continuously connected for hours.

Live debugging

Browser automation failures are difficult to diagnose from application logs alone.

A selector timeout can mean many different things:

  • the page did not load;
  • the proxy failed;
  • the website redirected;
  • a captcha appeared;
  • the element was rendered differently;
  • the session was blocked;
  • the browser is waiting on another request.

2Captcha provides a Live view for individual profiles. It can be used to inspect what the remote browser is actually displaying.

This is far more useful than repeatedly adding screenshots and log statements to a failing worker.

Captcha handling

This is the area where 2Captcha has the most obvious advantage.

Captcha solving is not a side product added to a generic browser hosting platform. It is the company's core specialization.

The Browser API is designed to handle captcha challenges as part of the browser workflow, including common reCAPTCHA, hCaptcha, and Cloudflare Turnstile scenarios.

That matters when captchas appear regularly rather than as unusual edge cases.

Common triggers include:

  • increased request volume;
  • IP changes;
  • account creation;
  • form submission;
  • authentication;
  • suspicious navigation patterns;
  • access to protected pages;
  • inconsistent browser fingerprints.

Without integrated captcha handling, developers usually need to:

  1. detect the challenge;
  2. identify its type;
  3. collect site-specific parameters;
  4. submit a task to an external solver;
  5. wait for the result;
  6. inject a token or interaction result;
  7. continue the browser workflow;
  8. retry when the session expires.

That is possible, but it is more code and another integration to maintain.

With 2Captcha Browser API, the browser and captcha components belong to the same product ecosystem. For captcha-heavy workflows, this is a meaningful architectural advantage.

Fingerprints and browser consistency

Changing the user agent is not enough to make an automated browser look consistent.

Browser identity includes a much larger group of values:

  • operating system
  • screen resolution
  • device pixel ratio
  • languages
  • timezone
  • WebGL renderer
  • Canvas behavior
  • media devices
  • browser headers
  • installed features
  • cookies
  • storage state

The values also need to agree with the proxy location and with each other.

2Captcha positions fingerprints, headers, cookies, sessions, and proxy configuration as parts of the same browser workflow. This is useful for projects where a basic headless browser works during development but becomes unreliable after deployment.

Where Browserless is stronger

Browserless is one of the most mature products in this comparison.

It is a strong option for teams that need browser infrastructure for:

  • Playwright and Puppeteer automation;
  • Selenium;
  • screenshots and PDF generation;
  • E2E tests;
  • CI/CD pipelines;
  • internal automation;
  • browser-based AI agents;
  • self-hosted deployment.

Its main advantage is flexibility.

Browserless offers managed WebSocket browsers, REST APIs, BrowserQL, multiple browser engines, Docker deployment, and commercial self-hosting.

The open-source Docker image is particularly attractive when data must stay inside a private network or when a team wants direct control over browser capacity.

Browserless also provides stealth and captcha-related functionality. However, the product structure is broader:

  • BaaS is intended for existing Playwright and Puppeteer code;
  • BrowserQL provides a declarative workflow with built-in stealth and captcha solving;
  • REST APIs handle individual jobs such as screenshots and PDFs.

That flexibility is useful, but it also means the exact feature set depends on which Browserless product and plan you use.

Choose Browserless when browser infrastructure and deployment control are more important than having a captcha-focused workflow.

Where Bright Data is stronger

Bright Data Browser API is designed for large production scraping workloads.

Its strongest areas include:

  • automated proxy management;
  • residential proxy infrastructure;
  • country, city, and ASN targeting;
  • built-in captcha solving;
  • large-scale browser allocation;
  • automated unblocking;
  • real-time Chrome DevTools monitoring;
  • enterprise compliance and support.

Bright Data is a serious option when browser sessions are only one part of a large data acquisition system.

For example, a company collecting product, travel, financial, or marketplace data across many countries may benefit from Bright Data's proxy network and enterprise tooling.

The tradeoff is complexity.

Bright Data has a large product ecosystem, multiple configuration concepts, several billing models, and an enterprise-oriented control panel. That is justified for large operations, but it can be excessive for a small engineering team that only needs ten or twenty browser workers.

Compared with Bright Data, 2Captcha is easier to position inside a smaller architecture:

text
profile -> proxy -> browser -> captcha -> result

Bright Data remains stronger when procurement requirements, enterprise support, compliance documentation, and very large proxy capacity matter more than simplicity.

Where Scrapfly is stronger

Scrapfly is more than a cloud browser.

Its platform includes:

  • Scrape API
  • Cloud Browser
  • extraction tools
  • screenshots
  • crawler functionality
  • proxy pools
  • anti-bot features
  • SDKs
  • AI-agent integrations

The Cloud Browser connects through CDP and supports Playwright, Puppeteer, Selenium, and agent frameworks.

Useful capabilities include:

  • datacenter and residential proxy pools;
  • OS fingerprint selection;
  • persistent sessions;
  • session resume;
  • human-in-the-loop control;
  • file downloads;
  • browser debugging.

Scrapfly is a good choice when a team already wants a complete data collection platform rather than a standalone browser product.

Its billing model requires more attention. Cloud Browser usage is calculated using both:

  • session time, rounded in 30-second units;
  • bandwidth consumption.

Residential bandwidth costs more credits than datacenter bandwidth. This makes cost estimation dependent on page weight, navigation behavior, media blocking, session duration, and proxy type.

That is manageable after benchmarking a real workload, but it is harder to estimate from the number of browser sessions alone.

Compared with Scrapfly, 2Captcha is more focused on the specific combination of browser profiles, proxy routing, and captcha handling.

Where ZenRows is stronger

ZenRows aims to make managed scraping easy to adopt.

Its Scraping Browser supports Playwright and Puppeteer and handles proxy management and IP rotation behind the scenes.

It is suitable for:

  • JavaScript rendering;
  • interaction with dynamic pages;
  • screenshots;
  • form workflows;
  • network interception;
  • basic managed browser scraping.

The simple connection model is attractive for developers who do not want to manage Chrome or proxy rotation themselves.

There is one important distinction in the current documentation: ZenRows states that its Scraping Browser does not include built-in captcha solving. Captcha handling is available through other parts of the ZenRows platform, including the Universal Scraper API, or through an external captcha service.

This does not make ZenRows a weak product. It means the best ZenRows workflow depends on the type of task:

  • use Scraping Browser when you need full browser control;
  • use Universal Scraper API when managed extraction and anti-bot handling are enough;
  • add an external solver when the browser workflow itself reaches a captcha.

For projects where captcha challenges are central to the workload, 2Captcha provides a more direct product fit.

The hidden cost: stitching several providers together

A browser automation stack often grows into something like this:

text
application
|
task queue
|
remote browser provider
|
proxy provider
|
fingerprint configuration
|
captcha solver
|
profile and cookie storage
|
logging and session replay

This architecture can work well, but every integration introduces operational work.

You need to decide:

  • which provider owns the session;
  • whether the proxy can change during a session;
  • where cookies are stored;
  • how retries affect the profile;
  • whether captcha results are tied to the current proxy;
  • how concurrent workers reserve browser identities;
  • how failed sessions are inspected;
  • which provider is responsible when a challenge is not solved.

The appeal of 2Captcha Browser API is that several of those responsibilities are already connected.

It does not eliminate the need for task queues, monitoring, or application-level retries. It does reduce the amount of vendor stitching required around the browser itself.

What I would benchmark before choosing

Marketing pages do not tell you whether a Browser API will work well against your actual target.

Before committing to any provider, run the same workload against each shortlisted platform and measure:

Success rate

Count only workflows that reach the expected final state.

A browser connection that starts successfully but fails on the third navigation is not a successful job.

text
success rate = completed workflows / started workflows

Cost per successful workflow

The cheapest browser-minute price is not necessarily the cheapest result.

Include:

  • browser runtime;
  • bandwidth;
  • proxy traffic;
  • captcha costs;
  • failed attempts;
  • retries;
  • minimum billing units.

text
cost per success = total provider cost / completed workflows

Startup and navigation latency

Measure at least:

  • WebSocket connection time;
  • browser readiness time;
  • first navigation time;
  • full workflow duration;
  • p50 and p95 latency.

Concurrency behavior

Test what happens when the number of workers increases.

Watch for:

  • connection queueing;
  • profile locking;
  • proxy shortages;
  • rate limits;
  • session startup delays;
  • inconsistent success rates.

Session recovery

Disconnect a worker during a test and see whether the session can be resumed.

This is especially important for multi-step workflows and AI agents.

Debugging quality

A useful debugging interface can save more engineering time than a small difference in browser pricing.

Check whether the platform provides:

  • live browser inspection;
  • screenshots;
  • console logs;
  • network logs;
  • video recordings;
  • session metadata;
  • clear error codes.

Which platform should you choose?

Choose 2Captcha Browser API when:

  • captcha challenges are common;
  • you need profiles for separate workers;
  • proxy configuration must be part of the browser workflow;
  • browser fingerprints and session consistency matter;
  • you want live inspection of browser sessions;
  • you want fewer separate providers;
  • your jobs fit within the current session limits.

Choose Browserless when:

  • you need mature browser infrastructure;
  • self-hosting is important;
  • the main workload is testing, screenshots, PDFs, or internal automation;
  • you want Docker or private VPC deployment;
  • you want a choice between BaaS, REST APIs, and BrowserQL.

Choose Bright Data when:

  • you operate at enterprise scale;
  • precise geo and ASN targeting are critical;
  • you need a large integrated proxy network;
  • compliance and enterprise support are major requirements;
  • cost is less important than large-scale reliability.

Choose Scrapfly when:

  • you want browser automation and extraction APIs from one platform;
  • you already use the Scrapfly ecosystem;
  • you need built-in AI-agent integrations;
  • time-and-bandwidth credit billing fits your workload.

Choose ZenRows when:

  • you want a simple managed browser;
  • automatic proxy rotation is sufficient;
  • you already use the ZenRows scraping suite;
  • captcha handling can be delegated to Universal Scraper API or an external solver.

Final verdict

There is no universal Browser API winner because the products solve different problems.

Browserless is the strongest infrastructure-oriented option. Bright Data is the strongest enterprise-oriented option. Scrapfly provides the broadest scraping platform of the group. ZenRows offers a simple route into managed browser scraping.

For protected-site automation, however, I would start with 2Captcha Browser API.

Its main advantage is architectural rather than promotional: the browser, proxy settings, profiles, live debugging, fingerprint-related tooling, and captcha handling are designed to operate together.

That makes it particularly suitable for scraping workers, QA flows, form automation, monitoring systems, and AI agents that regularly encounter anti-bot checks.

When captcha handling is one of the central requirements rather than an occasional exception, 2Captcha Browser API is the most practical and balanced choice in this comparison.

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