Notes for firefox extensions === Find extension by id --- - source: https://stackoverflow.com/a/51283520/9979122 Open `about:memory`. Click "measure" in **Show memory reports**. In the **Main Process** section, scroll down to **Other Measurements**. There you will find the installed (active) extensions with their names and their ids displayed as `baseURL=moz-extension://[random-ids]`. :::info This method works for both Firefox and Firefox for Android. Note that **only enabled extensions are shown**. ::: Some extension will break the site --- The issue is caused by `content-security-policy` e.g. cannot login into https://npmjs.org if one of these extension is enabled: - [Vue.js devtools](https://addons.mozilla.org/en-US/firefox/addon/vue-js-devtools/) - [Omni - Manage Tabs, Bookmarks, History...](https://addons.mozilla.org/zh-TW/firefox/addon/omnisearch/) - [遊戲橘子擴充元件](https://addons.mozilla.org/zh-TW/firefox/addon/beanfun-extension-check/) - etc.