The essential points from this guide -- each one is explained in detail below.
Playwright supports Chromium, Firefox, and WebKit; Puppeteer mainly automates Chrome and Chromium.
Playwright handles authenticated proxies natively, while Puppeteer needs the proxy-chain package to log in to a paid proxy.
Playwright assigns different proxies per browser context; Puppeteer needs a separate browser instance for each proxy identity.
In a playwright vs puppeteer cost comparison, both tools are free -- your real cost is proxy bandwidth, not the library.
Cheerio parses static HTML without a browser, so a cheerio vs puppeteer choice comes down to whether the page needs JavaScript rendering.
Puppeteer and Playwright are both free, open-source Node.js libraries that control a real browser instead of just fetching raw HTML. Puppeteer came first, built to automate Chrome through the Chrome DevTools Protocol. Playwright arrived later from engineers who had worked on Puppeteer, and it extended the same idea across three browser engines instead of one.
The table below lays out the puppeteer vs playwright differences that matter most for a scraping project. Proxy handling is the biggest practical gap: Playwright accepts a proxy's username and password directly in its launch options, while Puppeteer's --proxy-server flag cannot authenticate on its own, so most Puppeteer scrapers add the proxy-chain package to bridge the login step.
Browser coverage is the second major split. If a target site behaves differently in Firefox than in Chrome, or if a QA team already tests across three engines, Playwright's built-in support removes the need for separate tooling per browser. Puppeteer's Firefox support exists but stays experimental, so Chrome and Chromium remain its main focus.
Puppeteer keeps a head start on raw ecosystem size, since it launched years before Playwright and picked up plugins like puppeteer-extra along the way. Playwright's ecosystem is younger, but it ships proxy handling and multiple browser engines directly in the core library instead of leaving those basics to third-party plugins.
| Feature | Puppeteer | Playwright |
|---|---|---|
| Browser support | Chrome and Chromium, with experimental Firefox | Chromium, Firefox, and WebKit |
| Proxy authentication | Needs the proxy-chain package | Built in, no extra package needed |
| Multiple proxy identities | One browser instance per proxy | One browser, multiple proxied contexts |
| Anti-detection tooling | puppeteer-extra stealth plugin | Built-in stealth-friendly defaults |
| Typical memory use | 150-300 MB per browser instance | Shared browser process across contexts |
Both libraries drive a real browser instead of parsing HTML directly, which is what separates them from Cheerio. Puppeteer talks to Chrome through the Chrome DevTools Protocol, a WebSocket-based interface built into Chromium itself. Playwright wraps that same protocol for Chromium but adds its own translation layer for Firefox and WebKit, so one API call works the same way regardless of which engine is running underneath.
This architecture choice explains the proxy gap. Chrome's --proxy-server launch flag, which Puppeteer relies on, was never built to carry a username and password, so Puppeteer needs the proxy-chain package to start a small local proxy that handles the login step before forwarding traffic upstream. Playwright's proxy option, set on browser.launch() or browser.newContext(), passes server, username, and password directly and handles the 407 authentication challenge inside the library itself.
// Puppeteer needs proxy-chain for authenticated proxies
const proxyUrl = await proxyChain.anonymizeProxy('http://USER:PASS@gw.knoxproxy.com:7000');
const browser = await puppeteer.launch({ args: [`--proxy-server=${proxyUrl}`] });
// Playwright accepts credentials directly
const browser = await chromium.launch({
proxy: { server: 'http://gw.knoxproxy.com:7000', username: 'USER', password: 'PASS' },
});Playwright also lets you assign a different proxy to each browser context, so one running browser can hold several proxy identities at once. Puppeteer needs a separate browser instance -- and its own memory footprint -- for every proxy identity you want to run in parallel.
There is no meaningful raw-speed gap between Puppeteer and Playwright themselves, since both spend most of a scraping run waiting on network responses and page rendering rather than library overhead. Real-world speed depends far more on your proxy's latency, the target site's load time, and how many browser contexts or instances you run at once than on which library issued the commands.
Where the two libraries do differ is memory. A Puppeteer browser instance typically uses 150-300 MB of memory, and running multiple proxy identities means running multiple full instances. Playwright's per-context proxy model shares one browser process across several proxied contexts, so scaling up proxy identities does not multiply memory the same way.
A cheerio vs puppeteer comparison is a different question entirely. Cheerio parses raw HTML with no browser at all, so it runs far faster and lighter than either Puppeteer or Playwright, but it cannot execute JavaScript. Reach for Cheerio when the data you need sits in the page's initial HTML response, and reach for a full browser tool only once a page loads its content through client-side scripts after the fact.
Concurrency limits matter more than raw library speed once a scraping job runs at any real scale. Playwright's own async guidance caps parallel contexts around 5-15 to avoid overwhelming a single browser process, and Puppeteer's guidance is to close browser instances and proxy-chain connections promptly after each task to free memory. Both limits trace back to the same root cause: a real browser, whichever library drives it, is far heavier than a plain HTTP request.
Puppeteer, Playwright, and Cheerio are all free, open-source libraries, so there is no license fee separating them. The cost that actually changes between a puppeteer vs playwright setup is proxy bandwidth, and browser automation is heavier on that front than a plain HTTP request.
Loading a full page with Puppeteer or Playwright downloads images, fonts, stylesheets, and scripts along with the HTML, while Cheerio only ever fetches the raw HTML response. On residential proxies billed at $2.10/GB, a page-heavy Puppeteer or Playwright run can use several times the bandwidth of an equivalent Cheerio request. Blocking unneeded resources -- images and fonts you never read -- before they load is the most direct way to cut that gap, and both libraries support request interception for this.
For bandwidth-sensitive scraping, datacenter proxies at $0.60/GB keep costs lowest on permissive targets, while mobile proxies at $4.50/GB and ISP proxies suit account-based tasks that need a trusted, stable IP more than raw throughput. Check current pricing before estimating a project's total proxy spend, since the right proxy type changes the bill more than the choice between Puppeteer and Playwright ever will.
Running several proxy identities in parallel also changes the math. Puppeteer's one-instance-per-proxy model means each parallel identity pays for both its own bandwidth and its own 150-300 MB of browser memory, which adds up on a server with a fixed resource budget. Playwright's per-context proxies share one browser process, so the bandwidth cost per identity stays the same, but the memory cost of running many identities in parallel is lower.
Choose Puppeteer when a project is already Chrome-only, when the team relies on the puppeteer-extra stealth plugin ecosystem for anti-detection, or when adding a second library to an existing Puppeteer codebase is not worth the migration effort. Puppeteer remains a solid, well-documented choice for straightforward Chrome scraping that does not need multiple proxy identities in one process.
Choose Playwright for scraping that needs authenticated proxies without extra packages, for projects that must verify behavior across Chromium, Firefox, and WebKit, or for multi-account and geo-targeted scraping where per-context proxies replace launching several browser instances. Teams starting a new scraping project from scratch generally get more out of Playwright's built-in proxy handling than Puppeteer's added dependency.
Neither tool is the right choice when a page's data already sits in the raw HTML response. In that case, Cheerio paired with a plain HTTP client scrapes the same data with far less overhead, and you can add Puppeteer or Playwright later only for the specific pages that truly need JavaScript rendering. For a full walkthrough of either library's proxy setup, see how to use a proxy with Puppeteer or how to use a proxy with Playwright, and start with KnoxProxy's residential proxies if you have not picked a provider yet.
Teams already invested in one library's codebase, tests, and plugin choices rarely benefit from switching just to chase a feature the other tool happens to ship natively. A puppeteer vs playwright decision matters most at the start of a new project, before the surrounding scripts, error handling, and CI pipeline are built around one library's API.
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