mirror of
https://github.com/puppeteer/puppeteer
synced 2024-06-14 14:02:48 +00:00
237 lines
8.5 KiB
Markdown
237 lines
8.5 KiB
Markdown
# Puppeteer
|
|
|
|
[](https://github.com/puppeteer/puppeteer/actions?query=workflow%3ACI)
|
|
[](https://npmjs.org/package/puppeteer)
|
|
|
|
<img src="https://user-images.githubusercontent.com/10379601/29446482-04f7036a-841f-11e7-9872-91d1fc2ea683.png" height="200" align="right"/>
|
|
|
|
#### [Guides](https://pptr.dev/category/guides) | [API](https://pptr.dev/api) | [FAQ](https://pptr.dev/faq) | [Contributing](https://pptr.dev/contributing) | [Troubleshooting](https://pptr.dev/troubleshooting)
|
|
|
|
> Puppeteer is a Node.js library which provides a high-level API to control
|
|
> Chrome/Chromium over the
|
|
> [DevTools Protocol](https://chromedevtools.github.io/devtools-protocol/).
|
|
> Puppeteer runs in
|
|
> [headless](https://developers.google.com/web/updates/2017/04/headless-chrome)
|
|
> mode by default, but can be configured to run in full (non-headless)
|
|
> Chrome/Chromium.
|
|
|
|
#### What can I do?
|
|
|
|
Most things that you can do manually in the browser can be done using Puppeteer!
|
|
Here are a few examples to get you started:
|
|
|
|
- Generate screenshots and PDFs of pages.
|
|
- Crawl a SPA (Single-Page Application) and generate pre-rendered content (i.e.
|
|
"SSR" (Server-Side Rendering)).
|
|
- Automate form submission, UI testing, keyboard input, etc.
|
|
- Create an automated testing environment using the latest JavaScript and
|
|
browser features.
|
|
- Capture a
|
|
[timeline trace](https://developers.google.com/web/tools/chrome-devtools/evaluate-performance/reference)
|
|
of your site to help diagnose performance issues.
|
|
- Test Chrome Extensions.
|
|
|
|
## Getting Started
|
|
|
|
### Installation
|
|
|
|
To use Puppeteer in your project, run:
|
|
|
|
```bash
|
|
npm i puppeteer
|
|
# or `yarn add puppeteer`
|
|
# or `pnpm i puppeteer`
|
|
```
|
|
|
|
When you install Puppeteer, it automatically downloads a recent version of
|
|
Chromium (~170MB macOS, ~282MB Linux, ~280MB Windows) that is [guaranteed to
|
|
work](https://pptr.dev/faq#q-why-doesnt-puppeteer-vxxx-work-with-chromium-vyyy)
|
|
with Puppeteer. The browser is downloaded to the `$HOME/.cache/puppeteer` folder
|
|
by default (starting with Puppeteer v19.0.0).
|
|
|
|
If you deploy a project using Puppeteer to a hosting provider, such as Render or
|
|
Heroku, you might need to reconfigure the location of the cache to be within
|
|
your project folder (see an example below) because not all hosting providers
|
|
include `$HOME/.cache` into the project's deployment.
|
|
|
|
For a version of Puppeteer without the browser installation, see
|
|
[`puppeteer-core`](#puppeteer-core).
|
|
|
|
#### Configuration
|
|
|
|
Puppeteer uses several defaults that can be customized through configuration
|
|
files.
|
|
|
|
For example, to change the default cache directory Puppeteer uses to install
|
|
browsers, you can add a `.puppeteerrc.cjs` (or `puppeteer.config.cjs`) at the
|
|
root of your application with the contents
|
|
|
|
```js
|
|
const {join} = require('path');
|
|
|
|
/**
|
|
* @type {import("puppeteer").Configuration}
|
|
*/
|
|
module.exports = {
|
|
// Changes the cache location for Puppeteer.
|
|
cacheDirectory: join(__dirname, '.cache', 'puppeteer'),
|
|
};
|
|
```
|
|
|
|
After adding the configuration file, you will need to remove and reinstall
|
|
`puppeteer` for it to take effect.
|
|
|
|
See the [configuration guide](https://pptr.dev/guides/configuration) for more
|
|
information.
|
|
|
|
#### `puppeteer-core`
|
|
|
|
Every release since v1.7.0 we publish two packages:
|
|
|
|
- [`puppeteer`](https://www.npmjs.com/package/puppeteer)
|
|
- [`puppeteer-core`](https://www.npmjs.com/package/puppeteer-core)
|
|
|
|
`puppeteer` is a _product_ for browser automation. When installed, it downloads
|
|
a version of Chromium, which it then drives using `puppeteer-core`. Being an
|
|
end-user product, `puppeteer` automates several workflows using reasonable
|
|
defaults [that can be customized](https://pptr.dev/guides/configuration).
|
|
|
|
`puppeteer-core` is a _library_ to help drive anything that supports DevTools
|
|
protocol. Being a library, `puppeteer-core` is fully driven through its
|
|
programmatic interface implying no defaults are assumed and `puppeteer-core`
|
|
will not download Chromium when installed.
|
|
|
|
You should use `puppeteer-core` if you are
|
|
[connecting to a remote browser](https://pptr.dev/api/puppeteer.puppeteer.connect)
|
|
or [managing browsers yourself](https://pptr.dev/api/puppeteer.browserfetcher).
|
|
If you are managing browsers yourself, you will need to call
|
|
[`puppeteer.launch`](https://pptr.dev/api/puppeteer.puppeteernode.launch) with
|
|
an an explicit
|
|
[`executablePath`](https://pptr.dev/api/puppeteer.launchoptions)
|
|
(or [`channel`](https://pptr.dev/api/puppeteer.launchoptions) if it's
|
|
installed in a standard location).
|
|
|
|
When using `puppeteer-core`, remember to change the import:
|
|
|
|
```ts
|
|
import puppeteer from 'puppeteer-core';
|
|
```
|
|
|
|
### Usage
|
|
|
|
Puppeteer follows the latest
|
|
[maintenance LTS](https://github.com/nodejs/Release#release-schedule) version of
|
|
Node.
|
|
|
|
Puppeteer will be familiar to people using other browser testing frameworks. You
|
|
[launch](https://pptr.dev/api/puppeteer.puppeteernode.launch)/[connect](https://pptr.dev/api/puppeteer.puppeteernode.connect)
|
|
a [browser](https://pptr.dev/api/puppeteer.browser),
|
|
[create](https://pptr.dev/api/puppeteer.browser.newpage) some
|
|
[pages](https://pptr.dev/api/puppeteer.page), and then manipulate them with
|
|
[Puppeteer's API](https://pptr.dev/api).
|
|
|
|
For more in-depth usage, check our [guides](https://pptr.dev/category/guides)
|
|
and [examples](https://github.com/puppeteer/puppeteer/tree/main/examples).
|
|
|
|
#### Example
|
|
|
|
The following example searches [developer.chrome.com](https://developer.chrome.com/) for blog posts with text "automate beyond recorder", click on the first result and print the full title of the blog post.
|
|
|
|
```ts
|
|
import puppeteer from 'puppeteer';
|
|
|
|
(async () => {
|
|
const browser = await puppeteer.launch();
|
|
const page = await browser.newPage();
|
|
|
|
await page.goto('https://developer.chrome.com/');
|
|
|
|
// Set screen size
|
|
await page.setViewport({width: 1080, height: 1024});
|
|
|
|
// Type into search box
|
|
await page.type('.search-box__input', 'automate beyond recorder');
|
|
|
|
// Wait and click on first result
|
|
const searchResultSelector = '.search-box__link';
|
|
await page.waitForSelector(searchResultSelector);
|
|
await page.click(searchResultSelector);
|
|
|
|
// Locate the full title with a unique string
|
|
const textSelector = await page.waitForSelector(
|
|
'text/Customize and automate'
|
|
);
|
|
const fullTitle = await textSelector.evaluate(el => el.textContent);
|
|
|
|
// Print the full title
|
|
console.log('The title of this blog post is "%s".', fullTitle);
|
|
|
|
await browser.close();
|
|
})();
|
|
```
|
|
|
|
### Default runtime settings
|
|
|
|
**1. Uses Headless mode**
|
|
|
|
Puppeteer launches Chromium in
|
|
[headless mode](https://developers.google.com/web/updates/2017/04/headless-chrome).
|
|
To launch a full version of Chromium, set the
|
|
[`headless`](https://pptr.dev/api/puppeteer.browserlaunchargumentoptions)
|
|
option when launching a browser:
|
|
|
|
```ts
|
|
const browser = await puppeteer.launch({headless: false}); // default is true
|
|
```
|
|
|
|
**2. Runs a bundled version of Chromium**
|
|
|
|
By default, Puppeteer downloads and uses a specific version of Chromium so its
|
|
API is guaranteed to work out of the box. To use Puppeteer with a different
|
|
version of Chrome or Chromium, pass in the executable's path when creating a
|
|
`Browser` instance:
|
|
|
|
```ts
|
|
const browser = await puppeteer.launch({executablePath: '/path/to/Chrome'});
|
|
```
|
|
|
|
You can also use Puppeteer with Firefox Nightly (experimental support). See
|
|
[`Puppeteer.launch`](https://pptr.dev/api/puppeteer.puppeteernode.launch) for
|
|
more information.
|
|
|
|
See
|
|
[`this article`](https://www.howtogeek.com/202825/what%E2%80%99s-the-difference-between-chromium-and-chrome/)
|
|
for a description of the differences between Chromium and Chrome.
|
|
[`This article`](https://chromium.googlesource.com/chromium/src/+/refs/heads/main/docs/chromium_browser_vs_google_chrome.md)
|
|
describes some differences for Linux users.
|
|
|
|
**3. Creates a fresh user profile**
|
|
|
|
Puppeteer creates its own browser user profile which it **cleans up on every
|
|
run**.
|
|
|
|
#### Using Docker
|
|
|
|
See our [Docker guide](https://pptr.dev/guides/docker).
|
|
|
|
#### Using Chrome Extensions
|
|
|
|
See our [Chrome extensions guide](https://pptr.dev/guides/chrome-extensions).
|
|
|
|
## Resources
|
|
|
|
- [API Documentation](https://pptr.dev/api)
|
|
- [Guides](https://pptr.dev/category/guides)
|
|
- [Examples](https://github.com/puppeteer/puppeteer/tree/main/examples)
|
|
- [Community list of Puppeteer resources](https://github.com/transitive-bullshit/awesome-puppeteer)
|
|
|
|
## Contributing
|
|
|
|
Check out our [contributing guide](https://pptr.dev/contributing) to get an
|
|
overview of Puppeteer development.
|
|
|
|
## FAQ
|
|
|
|
Our [FAQ](https://pptr.dev/faq) has migrated to
|
|
[our site](https://pptr.dev/faq).
|