Little snippets of JavaScript that I've used in my bookmark bar, now shared with you.
Redirect from the current page to a site: search of that page with any keyword you want. I've used this for 10+ years, going back to my time editing ProgrammableWeb, so it defaults to a search for "api."
If you write a lot of Markdown, you want to grab a link quickly, without multiple copy-paste adventures. Put the title and URL of the current page into a link using Markdown syntax. Super handy for creating lists of resources.