How to use a proxy with Puppeteer

import puppeteer from "puppeteer";

const proxies = [
  "IP1:PORT1:USER:PASS",
  "IP2:PORT2:USER:PASS",
  "IP3:PORT3:USER:PASS",
];

const testUrl = "https://api.ipify.org";

for (let i = 0; i < proxies.length; i++) {
  const [host, port, username, password] = proxies[i].split(":");

  const browser = await puppeteer.launch({
    args: [`--proxy-server=http://${host}:${port}`],
  });

  const page = await browser.newPage();
  await page.authenticate({
    username,
    password,
  });

  await page.goto(testUrl);
  const result = await page.evaluate(() => document.body.innerText.trim());
  console.log(`Proxy ${i + 1}:`, result);
  await browser.close();
}

import puppeteer from "puppeteer";

const proxies = [
  "IP1:PORT1:USER:PASS",
  "IP2:PORT2:USER:PASS",
  "IP3:PORT3:USER:PASS",
];

const browser = await puppeteer.launch();
const contexts = [];

// Create contexts for each proxy
for (const proxy of proxies) {
  const [host, port] = proxy.split(":");
  const context = await browser.createBrowserContext({
    proxyServer: `http://${host}:${port}`,
  });
  contexts.push({
    context,
    credentials: proxy,
  });
}

// Use contexts with rotation
for (let i = 0; i < contexts.length; i++) {
  const { context, credentials } = contexts[i];
  const [, , username, password] = credentials.split(":");

  const page = await context.newPage();
  await page.authenticate({
    username,
    password,
  });

  await page.goto("https://api.ipify.org");
  const result = await page.evaluate(() => document.body.innerText.trim());
  console.log(`Context ${i + 1}:`, result);

  await context.close();
}

await browser.close();

import puppeteer from "puppeteer";
import proxyChain from "proxy-chain";

const upstreamProxy = "http://USER:PASS@HOST:PORT";

// Start a temporary local, no-auth proxy (e.g., http://127.0.0.1:8000)
const anonymizedProxy = await proxyChain.anonymizeProxy({
  url: upstreamProxy,
});

// Launch Puppeteer via the local proxy
const browser = await puppeteer.launch({
  args: [`--proxy-server=${anonymizedProxy}`],
});

const page = await browser.newPage();
await page.goto("https://ipapi.co/json/");

const result = await page.evaluate(() => document.body.innerText);
console.log(JSON.parse(result));

await browser.close();
// Clean up the local proxy
await proxyChain.closeAnonymizedProxy(anonymizedProxy, true);