chore: mark version v2.1.1 (#5388)
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Changhao Han
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README.md
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README.md
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<img src="https://user-images.githubusercontent.com/10379601/29446482-04f7036a-841f-11e7-9872-91d1fc2ea683.png" height="200" align="right">
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###### [API](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md) | [FAQ](#faq) | [Contributing](https://github.com/puppeteer/puppeteer/blob/master/CONTRIBUTING.md) | [Troubleshooting](https://github.com/puppeteer/puppeteer/blob/master/docs/troubleshooting.md)
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###### [API](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md) | [FAQ](#faq) | [Contributing](https://github.com/puppeteer/puppeteer/blob/master/CONTRIBUTING.md) | [Troubleshooting](https://github.com/puppeteer/puppeteer/blob/master/docs/troubleshooting.md)
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> Puppeteer is a Node library which provides a high-level API to control Chrome or Chromium over the [DevTools Protocol](https://chromedevtools.github.io/devtools-protocol/). Puppeteer runs [headless](https://developers.google.com/web/updates/2017/04/headless-chrome) by default, but can be configured to run full (non-headless) Chrome or Chromium.
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# or "yarn add puppeteer"
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```
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Note: When you install Puppeteer, it downloads a recent version of Chromium (~170MB Mac, ~282MB Linux, ~280MB Win) that is guaranteed to work with the API. To skip the download, see [Environment variables](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md#environment-variables).
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Note: When you install Puppeteer, it downloads a recent version of Chromium (~170MB Mac, ~282MB Linux, ~280MB Win) that is guaranteed to work with the API. To skip the download, see [Environment variables](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md#environment-variables).
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### puppeteer-core
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Node 8.9.0+. All examples below use async/await which is only supported in Node v7.6.0 or greater.
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Puppeteer will be familiar to people using other browser testing frameworks. You create an instance
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of `Browser`, open pages, and then manipulate them with [Puppeteer's API](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md#).
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of `Browser`, open pages, and then manipulate them with [Puppeteer's API](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md#).
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**Example** - navigating to https://example.com and saving a screenshot as *example.png*:
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node example.js
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```
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Puppeteer sets an initial page size to 800×600px, which defines the screenshot size. The page size can be customized with [`Page.setViewport()`](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md#pagesetviewportviewport).
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Puppeteer sets an initial page size to 800×600px, which defines the screenshot size. The page size can be customized with [`Page.setViewport()`](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md#pagesetviewportviewport).
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**Example** - create a PDF.
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node hn.js
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```
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See [`Page.pdf()`](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md#pagepdfoptions) for more information about creating pdfs.
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See [`Page.pdf()`](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md#pagepdfoptions) for more information about creating pdfs.
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**Example** - evaluate script in the context of the page
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node get-dimensions.js
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```
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See [`Page.evaluate()`](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md#pageevaluatepagefunction-args) for more information on `evaluate` and related methods like `evaluateOnNewDocument` and `exposeFunction`.
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See [`Page.evaluate()`](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md#pageevaluatepagefunction-args) for more information on `evaluate` and related methods like `evaluateOnNewDocument` and `exposeFunction`.
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<!-- [END getstarted] -->
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**1. Uses Headless mode**
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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` option](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md#puppeteerlaunchoptions) when launching a browser:
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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` option](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md#puppeteerlaunchoptions) when launching a browser:
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```js
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const browser = await puppeteer.launch({headless: false}); // default is true
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const browser = await puppeteer.launch({executablePath: '/path/to/Chrome'});
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```
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See [`Puppeteer.launch()`](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md#puppeteerlaunchoptions) for more information.
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See [`Puppeteer.launch()`](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md#puppeteerlaunchoptions) for more information.
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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/+/master/docs/chromium_browser_vs_google_chrome.md) describes some differences for Linux users.
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## Resources
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- [API Documentation](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md)
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- [API Documentation](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md)
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- [Examples](https://github.com/puppeteer/puppeteer/tree/master/examples/)
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- [Community list of Puppeteer resources](https://github.com/transitive-bullshit/awesome-puppeteer)
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Historically, Puppeteer supported Firefox indirectly through puppeteer-firefox, which relied on a custom, patched version of Firefox. This approach was also known as “Juggler”.
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After discussions with Mozilla, we collectively concluded that relying on custom patches was infeasible.
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Since then, we have been collaborating with Mozilla on supporting Puppeteer on “stock” Firefox.
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From Puppeteer v2.1.0 onwards, as an experimental feature, you can specify [`puppeteer.launch({product: 'firefox'})`](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md#puppeteerlaunchoptions) to run your Puppeteer scripts in Firefox, without any additional custom patches.
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From Puppeteer v2.1.0 onwards, as an experimental feature, you can specify [`puppeteer.launch({product: 'firefox'})`](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md#puppeteerlaunchoptions) to run your Puppeteer scripts in Firefox, without any additional custom patches.
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We will continue collaborating with other browser vendors to bring Puppeteer support to browsers such as Safari.
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This effort includes exploration of a standard for executing cross-browser commands (instead of relying on the non-standard DevTools Protocol used by Chrome).
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You may find that Puppeteer does not behave as expected when controlling pages that incorporate audio and video. (For example, [video playback/screenshots is likely to fail](https://github.com/puppeteer/puppeteer/issues/291).) There are two reasons for this:
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* Puppeteer is bundled with Chromium — not Chrome — and so by default, it inherits all of [Chromium's media-related limitations](https://www.chromium.org/audio-video). This means that Puppeteer does not support licensed formats such as AAC or H.264. (However, it is possible to force Puppeteer to use a separately-installed version Chrome instead of Chromium via the [`executablePath` option to `puppeteer.launch`](https://github.com/puppeteer/puppeteer/blob/v2.1.0/docs/api.md#puppeteerlaunchoptions). You should only use this configuration if you need an official release of Chrome that supports these media formats.)
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* Puppeteer is bundled with Chromium — not Chrome — and so by default, it inherits all of [Chromium's media-related limitations](https://www.chromium.org/audio-video). This means that Puppeteer does not support licensed formats such as AAC or H.264. (However, it is possible to force Puppeteer to use a separately-installed version Chrome instead of Chromium via the [`executablePath` option to `puppeteer.launch`](https://github.com/puppeteer/puppeteer/blob/v2.1.1/docs/api.md#puppeteerlaunchoptions). You should only use this configuration if you need an official release of Chrome that supports these media formats.)
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* Since Puppeteer (in all configurations) controls a desktop version of Chromium/Chrome, features that are only supported by the mobile version of Chrome are not supported. This means that Puppeteer [does not support HTTP Live Streaming (HLS)](https://caniuse.com/#feat=http-live-streaming).
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#### Q: I am having trouble installing / running Puppeteer in my test environment. Where should I look for help?
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# Puppeteer API <!-- GEN:version -->Tip-Of-Tree<!-- GEN:stop-->
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# Puppeteer API <!-- GEN:version -->v2.1.1<!-- GEN:stop-->
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<!-- GEN:empty-if-release --><!-- GEN:stop -->
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- Interactive Documentation: https://pptr.dev
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{
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"name": "puppeteer",
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"version": "2.1.0-post",
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"version": "2.1.1",
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"description": "A high-level API to control headless Chrome over the DevTools Protocol",
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"main": "index.js",
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"repository": "github:puppeteer/puppeteer",
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