Temporary Containers extension in Firefox can be configured to isolate upon normal left-click, for any links heading to different domains/subdomains, then you d

Temporary Containers extension in Firefox can be configured to isolate upon normal left-click, for any links heading to different domains/subdomains, then you don't need to copy/paste or do anything special. How? - about:addons - Temporary Containers > 3 dots > Preferences - Isolation > Global settings tab - Mouse Click settings - Change behavior for Middle Mouse, Ctrl/Cmd-Mouse, or normal Left Mouse clicks - Always = always open in new temp container - Never = never start new temp container on click - Different From Tab Domain/Subdomain = start a new temp container only when navigating to a different domain/subdomain