1. Mozilla
  2. Add-ons
  3. Browser extensions
  4. JavaScript APIs
  5. devtools
  6. devtools.network

devtools.network

The devtools.network API lets a devtools extension get information about network requests associated with the window that the devtools are attached to (the inspected window).

Like all the devtools APIs, this API is only available to code running in the document defined in the devtools_page manifest.json key, or in other devtools documents created by the extension (such as the panel's own document). See Extending the developer tools for more.

Functions

devtools.network.getHAR()

Get a HAR log for the page loaded in the current tab.

Events

devtools.network.onNavigated

Fired when the user navigates the inspected window to a new page.

devtools.network.onRequestFinished

Fired when the network request has finished and its details are available to the extension.

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
network
Chrome – Full support
Chrome 18 (Release date: 2012-03-28)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – Full support
Firefox 54 (Release date: 2017-06-13)
footnote Full support
Opera – Full support
Opera 15 (Release date: 2013-07-02)
footnote Full support
Safari – Full support
Safari 16 (Release date: 2022-09-12)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
getHAR
Chrome – Full support
Chrome 18 (Release date: 2012-03-28)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – Full support
Firefox 60 (Release date: 2018-05-09)
footnote
footnote The returned HAR log will be empty unless the user has previously activated the browser's network panel at least once.
Opera – Full support
Opera 15 (Release date: 2013-07-02)
footnote Full support
Safari – No support
Safari
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
onNavigated
Chrome – Full support
Chrome 18 (Release date: 2012-03-28)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – Full support
Firefox 54 (Release date: 2017-06-13)
footnote Full support
Opera – Full support
Opera 15 (Release date: 2013-07-02)
footnote Full support
Safari – Full support
Safari 16 (Release date: 2022-09-12)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support
onRequestFinished
Chrome – Full support
Chrome 18 (Release date: 2012-03-28)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox 60 – 60 (Release date: 2018-05-09)
footnote This event will only start firing after the user has activated the browser's network panel at least once.
Firefox – Full support
Firefox 61 (Release date: 2018-06-26)
footnote Full support
Opera – Full support
Opera 15 (Release date: 2013-07-02)
footnote Full support
Safari – No support
Safari
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support

Tip: you can click/tap on a cell for more information.

Full support
No support
See implementation notes.
Has more compatibility info.

Note: This API is based on Chromium's chrome.devtools.network API.

This page was last modified on by MDN contributors.

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998–2026 by individual mozilla.org contributors. Content available under a Creative Commons license.