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tabs.ZoomSettingsMode

files/en-us/mozilla/add-ons/webextensions/api/tabs/zoomsettingsmode/index.md

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Defines how zoom changes are handled. Extensions can pass this value into {{WebExtAPIRef("tabs.setZoomSettings()")}} to control how the browser handles attempts to change zoom settings for a tab. Defaults to "automatic".

Type

Values of this type are strings. Possible values are:

  • "automatic"
    • : Zoom changes are handled normally by the browser.
  • "disabled"
    • : Disables all zooming in the tab. The tab will revert to the default zoom level, and all attempted zoom changes will be ignored.
  • "manual"
    • : The extension will handle zoom changes itself, by listening for the {{WebExtAPIRef("tabs.onZoomChange")}} event and scaling the page accordingly. This mode does not support per-origin zooming: it will ignore the scope zoom setting and always use per-tab.

{{WebExtExamples}}

Browser compatibility

{{Compat}}

[!NOTE] This API is based on Chromium's chrome.tabs API. This documentation is derived from tabs.json in the Chromium code.

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