I have created a new Firefox profile. Now I want to copy my settings of the Developer Tools to this new profile. This should also include the custom device settings for the Responsive Design Mode. Is there a file (or files) in the profile-folder that contains these settings, and can I copy this file (or files) to the new profile? I found [https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile#w_bookmarks-downloads-and-browsing-history this link] about copying profile files, but it doesn't mention devtools settings.