When you’ve been using Salesforce for a while, you accumulate logins. You may have a login for your main instance, a login for your sandbox (a dupe of your instance without data that you can use to try new things) and maybe even logins for developer edition instances.
Here’s a tip for creating one-click Salesforce logins that I picked up a few years ago.
This is not secure. Only do this on a computer that you know will never be touched by human hands that aren’t your own. If you do this on a computer that someone else has access to, and they get into your Salesforce and do terrible things, please don’t come back here and blame me. You have been warned.
That’s said, let’s get to the tip.