| [Accessibility](./puppeteer.accessibility.md) | The Accessibility class provides methods for inspecting Chromium's accessibility tree. The accessibility tree is used by assistive technology such as [screen readers](https://en.wikipedia.org/wiki/Screen_reader) or [switches](https://en.wikipedia.org/wiki/Switch_access)<!-- -->. |
| [Browser](./puppeteer.browser.md) | A Browser is created when Puppeteer connects to a Chromium instance, either through [Puppeteer.launch()](./puppeteer.puppeteer.launch.md) or [Puppeteer.connect()](./puppeteer.puppeteer.connect.md)<!-- -->. |
| [Page](./puppeteer.page.md) | Page provides methods to interact with a single tab or \[extension background page\](https://developer.chrome.com/extensions/background\_pages) in Chromium. One \[Browser\] instance might have multiple \[Page\] instances. |
| [SecurityDetails](./puppeteer.securitydetails.md) | The SecurityDetails class represents the security details of a response that was received over a secure connection. |
| [WebWorker](./puppeteer.webworker.md) | The WebWorker class represents a [WebWorker](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API)<!-- -->. |
| [KeyDefinition](./puppeteer.keydefinition.md) | Copyright 2017 Google Inc. All rights reserved.<!-- -->Licensed under the Apache License, Version 2.0 (the 'License'); you may not use this file except in compliance with the License. You may obtain a copy of the License at<!-- -->http://www.apache.org/licenses/LICENSE-2.0<!-- -->Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an 'AS IS' BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. |