tabs.removeCSS()

Removes from a page CSS which was previously injected by a call to tabs.insertCSS().

Syntax

browser.tabs.removeCSS(
  tabId,           // optional integer
  details,         // extensionTypes.InjectDetails
  callback         // optional function
)

Parameters

tabId Optional

integer. The ID of the tab from which to remove the CSS. Defaults to the active tab of the current window.

details

extensionTypes.InjectDetails. An object describing the CSS to remove from the page. It contains the following properties:

 

allFramesOptional

boolean. If true, the code will be removed from all frames of the current page. If it is false, code is only removed from the top frame. Defaults to false.

codeOptional

string. CSS to remove, as a text string. This must exactly match a CSS string previously inserted into the page using tabs.insertCSS().

fileOptional

string. Path to a file containing the CSS to remove. This must exactly match a CSS file previously inserted into the page using tabs.insertCSS().

frameIdOptional

integer. The frame from which to remove the CSS. Defaults to 0 (the top-level frame).

matchAboutBlankOptional

boolean. If true, the CSS will be removed from embedded "about:blank" and "about:srcdoc" frames if your add-on has access to their parent document. Defaults to false.

callback Optional

function. Called, with no arguments, when the CSS has been removed from the page.

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Compatibility notes

Firefox

• 'matchAboutBlank' is not supported.

Examples

Remove CSS found in a string

This example removes the CSS found in a string from the currently active tab.

var css = "body { border: 20px dotted pink; }";

chrome.tabs.removeCSS({code: css});

Remove CSS found in an extension-packaged file

This example removes from the active tab CSS loaded from a file.

chrome.tabs.removeCSS({file: "/path/to/content-style.css"});

Remove CSS from a specific tab and its sub-frames

This more intricate call to tabs.removeCSS() removes CSS loaded from a bundled file from the tab whose ID is 5. In addition, the CSS is removed from all frames within the document.

When all of the CSS has been removed, the provided onExecuted() function is called.

function onExecuted() {
  console.log("finished");
}

chrome.tabs.removeCSS(
  5, {
  file: "/path/to/content-style.css",
  allFrames: true
}, onExecuted);

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