---
title: Increased Browser Rendering limits!
description: Browser Rendering now supports more concurrent browser sessions.
image: https://edgetunnel-b2h.pages.dev/changelog-preview.png
---

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# Changelog

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## Increased Browser Rendering limits!

Jan 30, 2025 

[ Workers ](https://edgetunnel-b2h.pages.dev/workers/)[ Browser Run ](https://edgetunnel-b2h.pages.dev/browser-run/) 

[Browser Rendering](https://edgetunnel-b2h.pages.dev/browser-run/) 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](https://edgetunnel-b2h.pages.dev/workers).

To manage concurrent browser sessions, you can use [Queues](https://edgetunnel-b2h.pages.dev/queues/) or [Workflows](https://edgetunnel-b2h.pages.dev/workflows/):

* [  JavaScript ](#tab-panel-2947)
* [  TypeScript ](#tab-panel-2948)

**index.js**

```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();
      }
    }
  },
};
```

**index.ts**

```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();
      }
    }
  },
};
```

```json
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```