Converting a Chrome or Firefox Web Extension for Safari

If you’ve created a web extension that works in a browser other than Safari, you can deploy it in Safari by using the Safari web extension converter. Prereq

User-Agent Switcher

How to Install, Manage, and Delete Safari Extensions

What are browser developer tools? - Learn web development

The four types of Safari extension

How to Get Safari's New Privacy Features in Chrome and Firefox

How to Use Firefox for Mac

How to keep 1Password up to date in your browser

How to Change User-Agent in Chrome, Firefox, Safari, and more

Extension for Safari - Feature requests - Paperpile Forum