It's efficient for a bookmarklet.

Os preference, screen size, original screen size, zoom level are displayed.

What whis means is that it is possible to open arbitrary applications on your system through a bookmarklet while sending data extracted and preprocessed from the current page by custom JavaScript to that application with the click of a button.

How to create a new URL scheme (such as org-protocol://)

what is really neat here is that with a .desktop file and a bookmarklet, you can send Web data directly from the browser to any local application!

How do we get to a world where our GUIs are as powerful and extensible as our CLIs? When I click Open in Emacs on my bookmark toolbar, and Emacs opens to the code I had open in my browser, I feel like I get a little glimpse of that world that could be.

Insert a code snippet in one line as a bookmark:

javascript: (() => {
// Code here
})();

For example:

• Find a "Jobs", "Careers" or "Hiring" link in the page, and click it.
• Find all email addresses on the current page, and display them in an alert.

These are not limited with permissions, so we should only execute code we checked.

#idea #project a collection of bookmarklet

Simply run these scripts on the web page to trigger some actions.

• Validate HTML
• Calculate carbon
• WAVE
• PageSpeed
• SSL Report
• Security Headers

They're nice and useful tools :)

They can be extended to browser extensions if they need to.