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Increased Browser Rendering limits!

Jan 30, 2025, 01:00 PM

Workers Browser Rendering

Browser Rendering now supports 10 concurrent browser instances per account and 10 new instances per minute, up from the previous limits of 2.

This allows you to launch more browser tasks from Cloudflare Workers.

To manage concurrent browser sessions, you can use Queues or Workflows:

JavaScript

index.js

export default {
  async queue(batch, env) {
    for (const message of batch.messages) {
      const browser = await puppeteer.launch(env.BROWSER);
      const page = await browser.newPage();

      try {
        await page.goto(message.url, {
          waitUntil: message.waitUntil,
        });
        // Process page...
      } finally {
        await browser.close();
      }
    }
  },
};

TypeScript

index.ts

interface QueueMessage {
  url: string;
  waitUntil: number;
}

export interface Env {
  BROWSER_QUEUE: Queue<QueueMessage>;
  BROWSER: Fetcher;
}

export default {
  async queue(batch: MessageBatch<QueueMessage>, env: Env): Promise<void> {
    for (const message of batch.messages) {
      const browser = await puppeteer.launch(env.BROWSER);
      const page = await browser.newPage();

      try {
        await page.goto(message.url, {
          waitUntil: message.waitUntil
        });
        // Process page...
      } finally {
        await browser.close();
      }
    }
  }
};