Can Puppeteer Link to Already Running Browser Instances?

Other Questions Puppeteer
1

Hey everyone,

I’m trying to figure out if there’s a way to use Puppeteer with a browser that’s already running. Like, what if I start Chrome normally on my computer and then want to control it with Puppeteer in my code? Is that even possible?

I know Puppeteer usually starts its own browser, but I’m wondering if we can skip that step and hook into an existing one. Has anyone tried this before or know if it’s doable?

It would be super helpful if I could use my regular browser setup and still get the automation benefits of Puppeteer. Any ideas or experiences with this would be great to hear about!

Thanks in advance for any help or tips!

2

I’ve actually experimented with this exact scenario! While Puppeteer doesn’t natively support linking to already running browser instances, I found a workaround that might help.

What I did was launch Chrome with the --remote-debugging-port flag, like this:
chrome.exe --remote-debugging-port=9222

Then in my Puppeteer script, I used the puppeteer.connect() method to hook into that browser instance:

const browser = await puppeteer.connect({
browserURL: ‘http://localhost:9222’
});

This allowed me to control my existing Chrome session with Puppeteer. It’s not quite the same as linking to any random browser instance, but it gets pretty close to what you’re looking for. The downside is you need to launch Chrome in a specific way, but it does let you use your regular profile and extensions.

Hope this helps! Let me know if you need any clarification on the process.

3

hey, i’ve messed around with this too! sadly, puppeteer can’t just hook into any random browser. But there’s a trick - launch chrome with --remote-debugging-port=9222, then use puppeteer.connect() in ur code. it’s not perfect, but lets u use ur usual setup. give it a shot!

4

While Puppeteer doesn’t directly support connecting to any running browser instance, there’s a workaround that might suit your needs. You can launch Chrome with the --remote-debugging-port flag, then use puppeteer.connect() to control that instance. It’s not exactly what you’re asking for, but it’s close.

Here’s the catch: you need to start Chrome in a specific way. This method allows you to use your regular profile and extensions, which is a plus. However, it won’t work with a browser you’ve already opened normally.

If you’re set on controlling a completely arbitrary browser instance, you might need to look into other automation tools or custom solutions. Puppeteer is powerful, but it has its limitations in this area.