- {{WebExtAPIRef("extensionTypes.ImageDetails")}}

- : Details about the format and quality of an image.

- {{WebExtAPIRef("extensionTypes.ImageFormat")}}

- : The format of an image.

- {{WebExtAPIRef("extensionTypes.InjectDetails")}}

- : Injects details into a page.

- {{WebExtAPIRef("extensionTypes.RunAt")}}

- : The soonest that the JavaScript or CSS will be injected into the tab.

- `extensionTypes.CSSOrigin`

- : Indicates whether a CSS stylesheet injected by [`tabs.insertCSS`](/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/insertCSS) should be treated as an "author" or "user" stylesheet.

{{Compat}}

{{WebExtExamples("h2")}}

> **Note:** This API is based on Chromium's [`chrome.extensionTypes`](https://developer.chrome.com/docs/extensions/reference/extensionTypes/) API. This documentation is derived from [`extension_types.json`](https://chromium.googlesource.com/chromium/src/+/master/extensions/common/api/extension_types.json) in the Chromium code.

<!--

// Copyright 2015 The Chromium Authors. All rights reserved.

//

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

//

// * Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

// * Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

// * Neither the name of Google Inc. nor the names of its

// contributors may be used to endorse or promote products derived from

// this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

-->