puppeteer/website/versioned_docs/version-19.4.0/guides/chrome-extensions.md
release-please[bot] 931d4fced5
chore: release main (#9322)
🤖 I have created a release *beep* *boop*
---


<details><summary>puppeteer: 19.4.0</summary>

##
[19.4.0](https://github.com/puppeteer/puppeteer/compare/puppeteer-v19.3.0...puppeteer-v19.4.0)
(2022-12-07)


### Features

* **chromium:** roll to Chromium 109.0.5412.0 (r1069273)
([#9364](https://github.com/puppeteer/puppeteer/issues/9364))
([1875da6](1875da6191)),
closes [#9233](https://github.com/puppeteer/puppeteer/issues/9233)


### Dependencies

* The following workspace dependencies were updated
  * dependencies
    * puppeteer-core bumped from 19.3.0 to 19.4.0
</details>

<details><summary>puppeteer-core: 19.4.0</summary>

##
[19.4.0](https://github.com/puppeteer/puppeteer/compare/puppeteer-core-v19.3.0...puppeteer-core-v19.4.0)
(2022-12-07)


### Features

* ability to send headers via ws connection to browser in node.js
environment
([#9314](https://github.com/puppeteer/puppeteer/issues/9314))
([937fffa](937fffaedc)),
closes [#7218](https://github.com/puppeteer/puppeteer/issues/7218)
* **chromium:** roll to Chromium 109.0.5412.0 (r1069273)
([#9364](https://github.com/puppeteer/puppeteer/issues/9364))
([1875da6](1875da6191)),
closes [#9233](https://github.com/puppeteer/puppeteer/issues/9233)
* **puppeteer-core:** keydown supports commands
([#9357](https://github.com/puppeteer/puppeteer/issues/9357))
([b7ebc5d](b7ebc5d9bb))


### Bug Fixes

* **puppeteer-core:** avoid type instantiation errors
([#9370](https://github.com/puppeteer/puppeteer/issues/9370))
([17f31a9](17f31a9ee4)),
closes [#9369](https://github.com/puppeteer/puppeteer/issues/9369)
</details>

---
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2022-12-07 19:35:29 +01:00

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Markdown

# Chrome Extensions
Puppeteer can be used for testing Chrome Extensions.
:::caution
Extensions in Chrome/Chromium currently only work in non-headless mode and
experimental Chrome headless mode.
:::
The following is code for getting a handle to the
[background page](https://developer.chrome.com/extensions/background_pages) of
an extension whose source is located in `./my-extension`:
```ts
const puppeteer = require('puppeteer');
(async () => {
const pathToExtension = require('path').join(__dirname, 'my-extension');
const browser = await puppeteer.launch({
headless: 'chrome',
args: [
`--disable-extensions-except=${pathToExtension}`,
`--load-extension=${pathToExtension}`,
],
});
const backgroundPageTarget = await browser.waitForTarget(
target => target.type() === 'background_page'
);
const backgroundPage = await backgroundPageTarget.page();
// Test the background page as you would any other page.
await browser.close();
})();
```
:::note
Chrome Manifest V3 extensions have a background ServiceWorker of type
'service_worker', instead of a page of type 'background_page'.
:::
:::note
It is not yet possible to test extension popups or content scripts.
:::