# Installing Angular DevTools in Firefox To install Angular DevTools in Firefox follow the steps: * Open menu item from top bar `Tools -> Browser Tools -> Remote Debugging`. * After clicking `Remote Debugging` click on `This Firefox` option from left navigation. You will see the below screen with list of extensions. Temporary extensions are unreleased extensions loaded in development mode. * Click on `Load Temporary Add-on` button to select and load the Angular DevTools extension for Firefox. * Select any file from `dist/bin/devtools/projects/shell-browser/src/prodapp` directory to load extension. If you have not built the extension for Firefox yet, you can do it using `yarn devtools:build:firefox` which will generate build for Firefox. * After selecting file and clicking open, you should be able to see Angular DevTools as a temporary Extension in Firefox. * Open any Angular application in dev mode and open Firefox DevTools you should see Angular Tab in there.