browser rendering limits (#19566)

* browser rendering limits

* Update src/content/changelogs-next/2025-01-30-browser-rendering-more-instances.mdx

Co-authored-by: Brendan Irvine-Broque <[email protected]>

* Update src/content/docs/browser-rendering/platform/limits.mdx

* Apply suggestions from code review

* Update src/content/docs/browser-rendering/platform/limits.mdx

* Update src/content/changelogs-next/2025-01-30-browser-rendering-more-instances.mdx

---------

Co-authored-by: Brendan Irvine-Broque <[email protected]>

Author: elithrar

src/content/changelogs-next/2025-01-30-browser-rendering-more-instances.mdx

@@ -0,0 +1,49 @@
+---
+title: More concurrent Br
+description: Browser Rendering now supports more concurrent browser sessions.
+products:
+  - workers
+  - browser-rendering
+date: 2025-01-30T13:00:00Z
+---
+
+import { Render, PackageManagers, TypeScriptExample } from "~/components"
+
+[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](/workers).
+
+To manage concurrent browser sessions, you can use [Queues](/queues/) or [Workflows](/workflows/):
+
+<TypeScriptExample filename="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();
+      }
+    }
+  }
+};
+```
+</TypeScriptExample>

src/content/docs/browser-rendering/platform/limits.mdx

@@ -5,7 +5,14 @@ sidebar:
   order: 30
 ---
 
-- 10 new browsers per minute per account.
-- 10 concurrent browsers per account.
-- By default, a browser instance gets killed if it does not get any [devtools](https://chromedevtools.github.io/devtools-protocol/) command for 60 seconds, freeing one instance. Users can optionally increase this by using the `keep_alive` [option](/browser-rendering/platform/puppeteer/#keep-alive).
-- `browser.close()` releases the browser instance.
+import { Render } from "~/components"
+
+| Feature                                       | Limit                                                         |
+| --------------------------------------------- | ------------------------------------------------------------- |
+| Concurrent browsers per account               | 10 per account	[^1] 						                            	  |
+| New browser instances per minute              | 10 per minute [^1]                                    					|
+| Browser timeout                               | 60 seconds [^1][^2]                                           |
+
+[^1]: Contact our team to request increases to this limit.
+[^2]: By default, a browser instance gets killed if it does not get any [devtools](https://chromedevtools.github.io/devtools-protocol/) command for 60 seconds, freeing one instance. Users can optionally increase this by using the `keep_alive` [option](/browser-rendering/platform/puppeteer/#keep-alive). `browser.close()` releases the browser instance.
+close()` releases the browser instance.